./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.2.prop1-back-serstep.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.2.prop1-back-serstep.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 222b14b2569faca05dcbf2bfc0919e64cef2d3bef8d6862959ccf7f7e6419270 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:56:21,242 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:56:21,314 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-06 22:56:21,320 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:56:21,320 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:56:21,344 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:56:21,345 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:56:21,346 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:56:21,347 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:56:21,347 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:56:21,348 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:56:21,349 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:56:21,349 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:56:21,350 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:56:21,351 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:56:21,351 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:56:21,352 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:56:21,352 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:56:21,353 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:56:21,354 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:56:21,354 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:56:21,361 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:56:21,362 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:56:21,362 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:56:21,363 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:56:21,363 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:56:21,364 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:56:21,364 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:56:21,365 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:56:21,365 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:56:21,366 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:56:21,366 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:56:21,367 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:56:21,367 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:56:21,368 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:56:21,368 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:56:21,369 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 222b14b2569faca05dcbf2bfc0919e64cef2d3bef8d6862959ccf7f7e6419270 [2023-11-06 22:56:21,687 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:56:21,714 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:56:21,717 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:56:21,719 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:56:21,720 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:56:21,721 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.2.prop1-back-serstep.c [2023-11-06 22:56:24,865 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:56:25,269 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:56:25,270 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.2.prop1-back-serstep.c [2023-11-06 22:56:25,299 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/data/c15601767/e6e0fa7e11964a1eb8adfaa006758382/FLAG834589a9d [2023-11-06 22:56:25,318 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/data/c15601767/e6e0fa7e11964a1eb8adfaa006758382 [2023-11-06 22:56:25,326 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:56:25,328 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:56:25,332 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:56:25,333 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:56:25,339 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:56:25,340 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:56:25" (1/1) ... [2023-11-06 22:56:25,341 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2134b81a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:25, skipping insertion in model container [2023-11-06 22:56:25,341 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:56:25" (1/1) ... [2023-11-06 22:56:25,422 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:56:25,678 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.2.prop1-back-serstep.c[1176,1189] [2023-11-06 22:56:26,194 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:56:26,211 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:56:26,224 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.2.prop1-back-serstep.c[1176,1189] [2023-11-06 22:56:26,422 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:56:26,438 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:56:26,438 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:26 WrapperNode [2023-11-06 22:56:26,439 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:56:26,440 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:56:26,440 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:56:26,440 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:56:26,449 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:26" (1/1) ... [2023-11-06 22:56:26,523 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:26" (1/1) ... [2023-11-06 22:56:27,415 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 6147 [2023-11-06 22:56:27,416 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:56:27,416 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:56:27,417 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:56:27,417 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:56:27,427 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:26" (1/1) ... [2023-11-06 22:56:27,427 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:26" (1/1) ... [2023-11-06 22:56:27,662 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:26" (1/1) ... [2023-11-06 22:56:27,669 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:26" (1/1) ... [2023-11-06 22:56:27,863 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:26" (1/1) ... [2023-11-06 22:56:27,888 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:26" (1/1) ... [2023-11-06 22:56:27,920 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:26" (1/1) ... [2023-11-06 22:56:27,941 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:26" (1/1) ... [2023-11-06 22:56:28,141 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:56:28,145 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:56:28,145 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:56:28,145 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:56:28,146 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:26" (1/1) ... [2023-11-06 22:56:28,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:56:28,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:56:28,190 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:56:28,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:56:28,265 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:56:28,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:56:28,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:56:28,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:56:28,825 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:56:28,843 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:56:33,900 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:56:33,927 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:56:33,927 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 22:56:33,931 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:56:33 BoogieIcfgContainer [2023-11-06 22:56:33,931 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:56:33,934 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:56:33,934 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:56:33,938 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:56:33,938 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:56:25" (1/3) ... [2023-11-06 22:56:33,939 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49dd2969 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:56:33, skipping insertion in model container [2023-11-06 22:56:33,939 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:26" (2/3) ... [2023-11-06 22:56:33,940 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49dd2969 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:56:33, skipping insertion in model container [2023-11-06 22:56:33,941 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:56:33" (3/3) ... [2023-11-06 22:56:33,942 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.anderson.2.prop1-back-serstep.c [2023-11-06 22:56:33,962 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:56:33,963 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:56:34,066 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:56:34,074 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6f1093ad, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:56:34,075 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 22:56:34,086 INFO L276 IsEmpty]: Start isEmpty. Operand has 1391 states, 1389 states have (on average 1.668106551475882) internal successors, (2317), 1390 states have internal predecessors, (2317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:56:34,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2023-11-06 22:56:34,108 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:56:34,109 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:56:34,110 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:56:34,115 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:56:34,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1285879715, now seen corresponding path program 1 times [2023-11-06 22:56:34,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:56:34,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671322560] [2023-11-06 22:56:34,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:56:34,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:56:34,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:35,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:56:35,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:56:35,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671322560] [2023-11-06 22:56:35,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671322560] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:56:35,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:56:35,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:56:35,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472338908] [2023-11-06 22:56:35,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:56:35,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:56:35,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:56:35,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:56:35,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:56:35,968 INFO L87 Difference]: Start difference. First operand has 1391 states, 1389 states have (on average 1.668106551475882) internal successors, (2317), 1390 states have internal predecessors, (2317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 37.0) internal successors, (185), 5 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:56:38,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:56:38,410 INFO L93 Difference]: Finished difference Result 4017 states and 6701 transitions. [2023-11-06 22:56:38,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:56:38,413 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 37.0) internal successors, (185), 5 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 185 [2023-11-06 22:56:38,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:56:38,442 INFO L225 Difference]: With dead ends: 4017 [2023-11-06 22:56:38,442 INFO L226 Difference]: Without dead ends: 2700 [2023-11-06 22:56:38,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:56:38,454 INFO L413 NwaCegarLoop]: 1776 mSDtfsCounter, 6575 mSDsluCounter, 3544 mSDsCounter, 0 mSdLazyCounter, 1613 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6575 SdHoareTripleChecker+Valid, 5320 SdHoareTripleChecker+Invalid, 1614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:56:38,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6575 Valid, 5320 Invalid, 1614 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1613 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-06 22:56:38,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2700 states. [2023-11-06 22:56:38,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2700 to 1483. [2023-11-06 22:56:38,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1483 states, 1482 states have (on average 1.665991902834008) internal successors, (2469), 1482 states have internal predecessors, (2469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:56:38,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1483 states to 1483 states and 2469 transitions. [2023-11-06 22:56:38,579 INFO L78 Accepts]: Start accepts. Automaton has 1483 states and 2469 transitions. Word has length 185 [2023-11-06 22:56:38,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:56:38,580 INFO L495 AbstractCegarLoop]: Abstraction has 1483 states and 2469 transitions. [2023-11-06 22:56:38,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.0) internal successors, (185), 5 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:56:38,581 INFO L276 IsEmpty]: Start isEmpty. Operand 1483 states and 2469 transitions. [2023-11-06 22:56:38,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2023-11-06 22:56:38,585 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:56:38,585 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:56:38,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:56:38,586 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:56:38,587 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:56:38,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1054320979, now seen corresponding path program 1 times [2023-11-06 22:56:38,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:56:38,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575320542] [2023-11-06 22:56:38,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:56:38,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:56:38,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:39,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:56:39,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:56:39,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575320542] [2023-11-06 22:56:39,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575320542] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:56:39,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:56:39,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:56:39,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869475097] [2023-11-06 22:56:39,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:56:39,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:56:39,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:56:39,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:56:39,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:56:39,353 INFO L87 Difference]: Start difference. First operand 1483 states and 2469 transitions. Second operand has 6 states, 6 states have (on average 31.0) internal successors, (186), 6 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:56:40,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:56:40,806 INFO L93 Difference]: Finished difference Result 4061 states and 6758 transitions. [2023-11-06 22:56:40,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:56:40,807 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 31.0) internal successors, (186), 6 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 186 [2023-11-06 22:56:40,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:56:40,823 INFO L225 Difference]: With dead ends: 4061 [2023-11-06 22:56:40,824 INFO L226 Difference]: Without dead ends: 2748 [2023-11-06 22:56:40,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:56:40,828 INFO L413 NwaCegarLoop]: 1920 mSDtfsCounter, 8689 mSDsluCounter, 4160 mSDsCounter, 0 mSdLazyCounter, 1080 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8689 SdHoareTripleChecker+Valid, 6080 SdHoareTripleChecker+Invalid, 1104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1080 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:56:40,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8689 Valid, 6080 Invalid, 1104 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [24 Valid, 1080 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-06 22:56:40,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2748 states. [2023-11-06 22:56:40,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2748 to 1488. [2023-11-06 22:56:40,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1488 states, 1487 states have (on average 1.6650975117686617) internal successors, (2476), 1487 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:56:40,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1488 states to 1488 states and 2476 transitions. [2023-11-06 22:56:40,874 INFO L78 Accepts]: Start accepts. Automaton has 1488 states and 2476 transitions. Word has length 186 [2023-11-06 22:56:40,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:56:40,875 INFO L495 AbstractCegarLoop]: Abstraction has 1488 states and 2476 transitions. [2023-11-06 22:56:40,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 31.0) internal successors, (186), 6 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:56:40,875 INFO L276 IsEmpty]: Start isEmpty. Operand 1488 states and 2476 transitions. [2023-11-06 22:56:40,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2023-11-06 22:56:40,878 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:56:40,879 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:56:40,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:56:40,879 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:56:40,880 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:56:40,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1334248233, now seen corresponding path program 1 times [2023-11-06 22:56:40,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:56:40,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843294380] [2023-11-06 22:56:40,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:56:40,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:56:40,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:41,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:56:41,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:56:41,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843294380] [2023-11-06 22:56:41,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843294380] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:56:41,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:56:41,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:56:41,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054730034] [2023-11-06 22:56:41,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:56:41,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:56:41,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:56:41,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:56:41,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:56:41,657 INFO L87 Difference]: Start difference. First operand 1488 states and 2476 transitions. Second operand has 6 states, 6 states have (on average 31.166666666666668) internal successors, (187), 6 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:56:43,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:56:43,213 INFO L93 Difference]: Finished difference Result 4061 states and 6757 transitions. [2023-11-06 22:56:43,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:56:43,214 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 31.166666666666668) internal successors, (187), 6 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 187 [2023-11-06 22:56:43,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:56:43,231 INFO L225 Difference]: With dead ends: 4061 [2023-11-06 22:56:43,231 INFO L226 Difference]: Without dead ends: 2748 [2023-11-06 22:56:43,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:56:43,241 INFO L413 NwaCegarLoop]: 1921 mSDtfsCounter, 8676 mSDsluCounter, 4160 mSDsCounter, 0 mSdLazyCounter, 1079 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8676 SdHoareTripleChecker+Valid, 6081 SdHoareTripleChecker+Invalid, 1103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1079 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:56:43,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8676 Valid, 6081 Invalid, 1103 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [24 Valid, 1079 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-06 22:56:43,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2748 states. [2023-11-06 22:56:43,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2748 to 1494. [2023-11-06 22:56:43,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1494 states, 1493 states have (on average 1.66443402545211) internal successors, (2485), 1493 states have internal predecessors, (2485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:56:43,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1494 states to 1494 states and 2485 transitions. [2023-11-06 22:56:43,291 INFO L78 Accepts]: Start accepts. Automaton has 1494 states and 2485 transitions. Word has length 187 [2023-11-06 22:56:43,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:56:43,293 INFO L495 AbstractCegarLoop]: Abstraction has 1494 states and 2485 transitions. [2023-11-06 22:56:43,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 31.166666666666668) internal successors, (187), 6 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:56:43,297 INFO L276 IsEmpty]: Start isEmpty. Operand 1494 states and 2485 transitions. [2023-11-06 22:56:43,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2023-11-06 22:56:43,300 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:56:43,300 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:56:43,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:56:43,302 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:56:43,304 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:56:43,304 INFO L85 PathProgramCache]: Analyzing trace with hash 349018953, now seen corresponding path program 1 times [2023-11-06 22:56:43,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:56:43,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749074811] [2023-11-06 22:56:43,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:56:43,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:56:43,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:44,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:56:44,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:56:44,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749074811] [2023-11-06 22:56:44,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749074811] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:56:44,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:56:44,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:56:44,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400306509] [2023-11-06 22:56:44,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:56:44,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:56:44,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:56:44,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:56:44,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:56:44,123 INFO L87 Difference]: Start difference. First operand 1494 states and 2485 transitions. Second operand has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:56:46,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:56:46,253 INFO L93 Difference]: Finished difference Result 4013 states and 6685 transitions. [2023-11-06 22:56:46,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:56:46,254 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2023-11-06 22:56:46,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:56:46,268 INFO L225 Difference]: With dead ends: 4013 [2023-11-06 22:56:46,269 INFO L226 Difference]: Without dead ends: 2700 [2023-11-06 22:56:46,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:56:46,282 INFO L413 NwaCegarLoop]: 1776 mSDtfsCounter, 6558 mSDsluCounter, 3544 mSDsCounter, 0 mSdLazyCounter, 1613 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6558 SdHoareTripleChecker+Valid, 5320 SdHoareTripleChecker+Invalid, 1613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:56:46,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6558 Valid, 5320 Invalid, 1613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1613 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-06 22:56:46,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2700 states. [2023-11-06 22:56:46,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2700 to 1495. [2023-11-06 22:56:46,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1495 states, 1494 states have (on average 1.6639892904953146) internal successors, (2486), 1494 states have internal predecessors, (2486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:56:46,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1495 states to 1495 states and 2486 transitions. [2023-11-06 22:56:46,337 INFO L78 Accepts]: Start accepts. Automaton has 1495 states and 2486 transitions. Word has length 188 [2023-11-06 22:56:46,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:56:46,338 INFO L495 AbstractCegarLoop]: Abstraction has 1495 states and 2486 transitions. [2023-11-06 22:56:46,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:56:46,338 INFO L276 IsEmpty]: Start isEmpty. Operand 1495 states and 2486 transitions. [2023-11-06 22:56:46,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2023-11-06 22:56:46,341 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:56:46,341 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:56:46,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:56:46,342 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:56:46,342 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:56:46,342 INFO L85 PathProgramCache]: Analyzing trace with hash 294626055, now seen corresponding path program 1 times [2023-11-06 22:56:46,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:56:46,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526427860] [2023-11-06 22:56:46,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:56:46,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:56:46,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:46,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:56:46,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:56:46,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526427860] [2023-11-06 22:56:46,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526427860] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:56:46,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:56:46,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:56:46,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434906193] [2023-11-06 22:56:46,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:56:46,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:56:46,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:56:46,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:56:46,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:56:46,890 INFO L87 Difference]: Start difference. First operand 1495 states and 2486 transitions. Second operand has 6 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:56:48,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:56:48,291 INFO L93 Difference]: Finished difference Result 4061 states and 6755 transitions. [2023-11-06 22:56:48,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:56:48,292 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2023-11-06 22:56:48,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:56:48,307 INFO L225 Difference]: With dead ends: 4061 [2023-11-06 22:56:48,307 INFO L226 Difference]: Without dead ends: 2748 [2023-11-06 22:56:48,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:56:48,311 INFO L413 NwaCegarLoop]: 1923 mSDtfsCounter, 8660 mSDsluCounter, 4160 mSDsCounter, 0 mSdLazyCounter, 1077 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8660 SdHoareTripleChecker+Valid, 6083 SdHoareTripleChecker+Invalid, 1101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1077 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:56:48,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8660 Valid, 6083 Invalid, 1101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1077 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-06 22:56:48,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2748 states. [2023-11-06 22:56:48,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2748 to 1500. [2023-11-06 22:56:48,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1500 states, 1499 states have (on average 1.6631087391594397) internal successors, (2493), 1499 states have internal predecessors, (2493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:56:48,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1500 states to 1500 states and 2493 transitions. [2023-11-06 22:56:48,355 INFO L78 Accepts]: Start accepts. Automaton has 1500 states and 2493 transitions. Word has length 188 [2023-11-06 22:56:48,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:56:48,355 INFO L495 AbstractCegarLoop]: Abstraction has 1500 states and 2493 transitions. [2023-11-06 22:56:48,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:56:48,356 INFO L276 IsEmpty]: Start isEmpty. Operand 1500 states and 2493 transitions. [2023-11-06 22:56:48,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-11-06 22:56:48,358 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:56:48,359 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:56:48,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:56:48,359 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:56:48,359 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:56:48,360 INFO L85 PathProgramCache]: Analyzing trace with hash 332924427, now seen corresponding path program 1 times [2023-11-06 22:56:48,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:56:48,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215123376] [2023-11-06 22:56:48,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:56:48,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:56:48,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:48,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:56:48,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:56:48,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215123376] [2023-11-06 22:56:48,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215123376] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:56:48,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:56:48,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:56:48,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036063454] [2023-11-06 22:56:48,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:56:48,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:56:48,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:56:48,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:56:48,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:56:48,955 INFO L87 Difference]: Start difference. First operand 1500 states and 2493 transitions. Second operand has 6 states, 6 states have (on average 31.5) internal successors, (189), 6 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:56:50,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:56:50,412 INFO L93 Difference]: Finished difference Result 4061 states and 6754 transitions. [2023-11-06 22:56:50,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:56:50,413 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 31.5) internal successors, (189), 6 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 189 [2023-11-06 22:56:50,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:56:50,428 INFO L225 Difference]: With dead ends: 4061 [2023-11-06 22:56:50,428 INFO L226 Difference]: Without dead ends: 2748 [2023-11-06 22:56:50,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:56:50,431 INFO L413 NwaCegarLoop]: 1924 mSDtfsCounter, 8643 mSDsluCounter, 4160 mSDsCounter, 0 mSdLazyCounter, 1076 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8643 SdHoareTripleChecker+Valid, 6084 SdHoareTripleChecker+Invalid, 1100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1076 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:56:50,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8643 Valid, 6084 Invalid, 1100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1076 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-06 22:56:50,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2748 states. [2023-11-06 22:56:50,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2748 to 1509. [2023-11-06 22:56:50,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1509 states, 1508 states have (on average 1.6624668435013263) internal successors, (2507), 1508 states have internal predecessors, (2507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:56:50,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1509 states to 1509 states and 2507 transitions. [2023-11-06 22:56:50,474 INFO L78 Accepts]: Start accepts. Automaton has 1509 states and 2507 transitions. Word has length 189 [2023-11-06 22:56:50,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:56:50,475 INFO L495 AbstractCegarLoop]: Abstraction has 1509 states and 2507 transitions. [2023-11-06 22:56:50,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 31.5) internal successors, (189), 6 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:56:50,476 INFO L276 IsEmpty]: Start isEmpty. Operand 1509 states and 2507 transitions. [2023-11-06 22:56:50,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-11-06 22:56:50,478 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:56:50,478 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:56:50,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:56:50,479 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:56:50,479 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:56:50,479 INFO L85 PathProgramCache]: Analyzing trace with hash -452741161, now seen corresponding path program 1 times [2023-11-06 22:56:50,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:56:50,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992357165] [2023-11-06 22:56:50,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:56:50,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:56:50,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:51,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:56:51,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:56:51,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992357165] [2023-11-06 22:56:51,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992357165] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:56:51,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:56:51,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:56:51,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990974068] [2023-11-06 22:56:51,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:56:51,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:56:51,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:56:51,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:56:51,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:56:51,182 INFO L87 Difference]: Start difference. First operand 1509 states and 2507 transitions. Second operand has 5 states, 5 states have (on average 38.0) internal successors, (190), 5 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:56:53,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:56:53,157 INFO L93 Difference]: Finished difference Result 4013 states and 6682 transitions. [2023-11-06 22:56:53,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:56:53,158 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 38.0) internal successors, (190), 5 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 190 [2023-11-06 22:56:53,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:56:53,172 INFO L225 Difference]: With dead ends: 4013 [2023-11-06 22:56:53,173 INFO L226 Difference]: Without dead ends: 2700 [2023-11-06 22:56:53,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:56:53,176 INFO L413 NwaCegarLoop]: 1776 mSDtfsCounter, 6540 mSDsluCounter, 3544 mSDsCounter, 0 mSdLazyCounter, 1613 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6540 SdHoareTripleChecker+Valid, 5320 SdHoareTripleChecker+Invalid, 1613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-06 22:56:53,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6540 Valid, 5320 Invalid, 1613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1613 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-06 22:56:53,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2700 states. [2023-11-06 22:56:53,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2700 to 1510. [2023-11-06 22:56:53,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1510 states, 1509 states have (on average 1.662027833001988) internal successors, (2508), 1509 states have internal predecessors, (2508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:56:53,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1510 states to 1510 states and 2508 transitions. [2023-11-06 22:56:53,232 INFO L78 Accepts]: Start accepts. Automaton has 1510 states and 2508 transitions. Word has length 190 [2023-11-06 22:56:53,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:56:53,233 INFO L495 AbstractCegarLoop]: Abstraction has 1510 states and 2508 transitions. [2023-11-06 22:56:53,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.0) internal successors, (190), 5 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:56:53,233 INFO L276 IsEmpty]: Start isEmpty. Operand 1510 states and 2508 transitions. [2023-11-06 22:56:53,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-11-06 22:56:53,236 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:56:53,236 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:56:53,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:56:53,236 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:56:53,237 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:56:53,237 INFO L85 PathProgramCache]: Analyzing trace with hash 423277845, now seen corresponding path program 1 times [2023-11-06 22:56:53,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:56:53,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674014773] [2023-11-06 22:56:53,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:56:53,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:56:53,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:53,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:56:53,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:56:53,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674014773] [2023-11-06 22:56:53,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674014773] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:56:53,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:56:53,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:56:53,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419780191] [2023-11-06 22:56:53,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:56:53,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:56:53,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:56:53,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:56:53,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:56:53,727 INFO L87 Difference]: Start difference. First operand 1510 states and 2508 transitions. Second operand has 6 states, 6 states have (on average 31.666666666666668) internal successors, (190), 6 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:56:55,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:56:55,263 INFO L93 Difference]: Finished difference Result 4061 states and 6752 transitions. [2023-11-06 22:56:55,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:56:55,264 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 31.666666666666668) internal successors, (190), 6 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 190 [2023-11-06 22:56:55,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:56:55,280 INFO L225 Difference]: With dead ends: 4061 [2023-11-06 22:56:55,280 INFO L226 Difference]: Without dead ends: 2748 [2023-11-06 22:56:55,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:56:55,284 INFO L413 NwaCegarLoop]: 1926 mSDtfsCounter, 8627 mSDsluCounter, 4160 mSDsCounter, 0 mSdLazyCounter, 1074 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8627 SdHoareTripleChecker+Valid, 6086 SdHoareTripleChecker+Invalid, 1098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1074 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:56:55,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8627 Valid, 6086 Invalid, 1098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1074 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-06 22:56:55,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2748 states. [2023-11-06 22:56:55,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2748 to 1515. [2023-11-06 22:56:55,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1515 states, 1514 states have (on average 1.6611624834874505) internal successors, (2515), 1514 states have internal predecessors, (2515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:56:55,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1515 states to 1515 states and 2515 transitions. [2023-11-06 22:56:55,344 INFO L78 Accepts]: Start accepts. Automaton has 1515 states and 2515 transitions. Word has length 190 [2023-11-06 22:56:55,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:56:55,345 INFO L495 AbstractCegarLoop]: Abstraction has 1515 states and 2515 transitions. [2023-11-06 22:56:55,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 31.666666666666668) internal successors, (190), 6 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:56:55,345 INFO L276 IsEmpty]: Start isEmpty. Operand 1515 states and 2515 transitions. [2023-11-06 22:56:55,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2023-11-06 22:56:55,348 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:56:55,349 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:56:55,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:56:55,349 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:56:55,350 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:56:55,350 INFO L85 PathProgramCache]: Analyzing trace with hash -267284671, now seen corresponding path program 1 times [2023-11-06 22:56:55,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:56:55,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490480301] [2023-11-06 22:56:55,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:56:55,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:56:55,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:56,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:56:56,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:56:56,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490480301] [2023-11-06 22:56:56,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490480301] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:56:56,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:56:56,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:56:56,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487265523] [2023-11-06 22:56:56,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:56:56,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:56:56,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:56:56,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:56:56,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:56:56,254 INFO L87 Difference]: Start difference. First operand 1515 states and 2515 transitions. Second operand has 5 states, 5 states have (on average 38.2) internal successors, (191), 5 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:56:58,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:56:58,165 INFO L93 Difference]: Finished difference Result 4013 states and 6680 transitions. [2023-11-06 22:56:58,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:56:58,165 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 38.2) internal successors, (191), 5 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 191 [2023-11-06 22:56:58,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:56:58,182 INFO L225 Difference]: With dead ends: 4013 [2023-11-06 22:56:58,182 INFO L226 Difference]: Without dead ends: 2700 [2023-11-06 22:56:58,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:56:58,186 INFO L413 NwaCegarLoop]: 1776 mSDtfsCounter, 6531 mSDsluCounter, 3544 mSDsCounter, 0 mSdLazyCounter, 1613 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6531 SdHoareTripleChecker+Valid, 5320 SdHoareTripleChecker+Invalid, 1613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-06 22:56:58,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6531 Valid, 5320 Invalid, 1613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1613 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-06 22:56:58,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2700 states. [2023-11-06 22:56:58,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2700 to 1516. [2023-11-06 22:56:58,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1516 states, 1515 states have (on average 1.6607260726072608) internal successors, (2516), 1515 states have internal predecessors, (2516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:56:58,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1516 states to 1516 states and 2516 transitions. [2023-11-06 22:56:58,242 INFO L78 Accepts]: Start accepts. Automaton has 1516 states and 2516 transitions. Word has length 191 [2023-11-06 22:56:58,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:56:58,242 INFO L495 AbstractCegarLoop]: Abstraction has 1516 states and 2516 transitions. [2023-11-06 22:56:58,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.2) internal successors, (191), 5 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:56:58,243 INFO L276 IsEmpty]: Start isEmpty. Operand 1516 states and 2516 transitions. [2023-11-06 22:56:58,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2023-11-06 22:56:58,246 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:56:58,246 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:56:58,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 22:56:58,246 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:56:58,247 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:56:58,247 INFO L85 PathProgramCache]: Analyzing trace with hash -748364929, now seen corresponding path program 1 times [2023-11-06 22:56:58,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:56:58,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787637381] [2023-11-06 22:56:58,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:56:58,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:56:58,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:58,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:56:58,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:56:58,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787637381] [2023-11-06 22:56:58,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787637381] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:56:58,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:56:58,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:56:58,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207037043] [2023-11-06 22:56:58,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:56:58,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:56:58,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:56:58,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:56:58,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:56:58,703 INFO L87 Difference]: Start difference. First operand 1516 states and 2516 transitions. Second operand has 6 states, 6 states have (on average 31.833333333333332) internal successors, (191), 6 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:56:59,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:56:59,891 INFO L93 Difference]: Finished difference Result 4061 states and 6750 transitions. [2023-11-06 22:56:59,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:56:59,892 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 31.833333333333332) internal successors, (191), 6 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 191 [2023-11-06 22:56:59,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:56:59,908 INFO L225 Difference]: With dead ends: 4061 [2023-11-06 22:56:59,908 INFO L226 Difference]: Without dead ends: 2748 [2023-11-06 22:56:59,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:56:59,911 INFO L413 NwaCegarLoop]: 1928 mSDtfsCounter, 8611 mSDsluCounter, 4160 mSDsCounter, 0 mSdLazyCounter, 1072 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8611 SdHoareTripleChecker+Valid, 6088 SdHoareTripleChecker+Invalid, 1096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:56:59,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8611 Valid, 6088 Invalid, 1096 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1072 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-06 22:56:59,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2748 states. [2023-11-06 22:56:59,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2748 to 1521. [2023-11-06 22:56:59,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1521 states, 1520 states have (on average 1.6598684210526315) internal successors, (2523), 1520 states have internal predecessors, (2523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:56:59,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1521 states to 1521 states and 2523 transitions. [2023-11-06 22:56:59,956 INFO L78 Accepts]: Start accepts. Automaton has 1521 states and 2523 transitions. Word has length 191 [2023-11-06 22:56:59,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:56:59,957 INFO L495 AbstractCegarLoop]: Abstraction has 1521 states and 2523 transitions. [2023-11-06 22:56:59,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 31.833333333333332) internal successors, (191), 6 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:56:59,957 INFO L276 IsEmpty]: Start isEmpty. Operand 1521 states and 2523 transitions. [2023-11-06 22:56:59,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-11-06 22:56:59,960 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:56:59,960 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:56:59,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 22:56:59,960 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:56:59,961 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:56:59,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1406036661, now seen corresponding path program 1 times [2023-11-06 22:56:59,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:56:59,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776545483] [2023-11-06 22:56:59,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:56:59,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:00,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:00,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:57:00,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:57:00,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776545483] [2023-11-06 22:57:00,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776545483] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:57:00,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:57:00,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:57:00,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475131606] [2023-11-06 22:57:00,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:57:00,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:57:00,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:57:00,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:57:00,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:57:00,695 INFO L87 Difference]: Start difference. First operand 1521 states and 2523 transitions. Second operand has 5 states, 5 states have (on average 38.4) internal successors, (192), 5 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:02,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:57:02,423 INFO L93 Difference]: Finished difference Result 4013 states and 6678 transitions. [2023-11-06 22:57:02,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:57:02,424 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 38.4) internal successors, (192), 5 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 192 [2023-11-06 22:57:02,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:57:02,435 INFO L225 Difference]: With dead ends: 4013 [2023-11-06 22:57:02,436 INFO L226 Difference]: Without dead ends: 2700 [2023-11-06 22:57:02,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:57:02,439 INFO L413 NwaCegarLoop]: 1776 mSDtfsCounter, 6522 mSDsluCounter, 3544 mSDsCounter, 0 mSdLazyCounter, 1613 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6522 SdHoareTripleChecker+Valid, 5320 SdHoareTripleChecker+Invalid, 1613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:57:02,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6522 Valid, 5320 Invalid, 1613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1613 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-06 22:57:02,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2700 states. [2023-11-06 22:57:02,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2700 to 1522. [2023-11-06 22:57:02,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1522 states, 1521 states have (on average 1.6594345825115056) internal successors, (2524), 1521 states have internal predecessors, (2524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:02,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1522 states to 1522 states and 2524 transitions. [2023-11-06 22:57:02,484 INFO L78 Accepts]: Start accepts. Automaton has 1522 states and 2524 transitions. Word has length 192 [2023-11-06 22:57:02,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:57:02,484 INFO L495 AbstractCegarLoop]: Abstraction has 1522 states and 2524 transitions. [2023-11-06 22:57:02,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.4) internal successors, (192), 5 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:02,485 INFO L276 IsEmpty]: Start isEmpty. Operand 1522 states and 2524 transitions. [2023-11-06 22:57:02,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-11-06 22:57:02,487 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:57:02,487 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:57:02,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 22:57:02,488 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:57:02,488 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:02,489 INFO L85 PathProgramCache]: Analyzing trace with hash 522236041, now seen corresponding path program 1 times [2023-11-06 22:57:02,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:02,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571022507] [2023-11-06 22:57:02,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:02,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:02,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:02,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:57:02,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:57:02,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571022507] [2023-11-06 22:57:02,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571022507] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:57:02,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:57:02,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:57:02,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188007680] [2023-11-06 22:57:02,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:57:02,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:57:02,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:57:02,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:57:02,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:57:02,933 INFO L87 Difference]: Start difference. First operand 1522 states and 2524 transitions. Second operand has 6 states, 6 states have (on average 32.0) internal successors, (192), 6 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:04,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:57:04,240 INFO L93 Difference]: Finished difference Result 4061 states and 6748 transitions. [2023-11-06 22:57:04,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:57:04,240 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 32.0) internal successors, (192), 6 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 192 [2023-11-06 22:57:04,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:57:04,246 INFO L225 Difference]: With dead ends: 4061 [2023-11-06 22:57:04,247 INFO L226 Difference]: Without dead ends: 2748 [2023-11-06 22:57:04,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:57:04,250 INFO L413 NwaCegarLoop]: 1930 mSDtfsCounter, 8595 mSDsluCounter, 4160 mSDsCounter, 0 mSdLazyCounter, 1070 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8595 SdHoareTripleChecker+Valid, 6090 SdHoareTripleChecker+Invalid, 1094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1070 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:57:04,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8595 Valid, 6090 Invalid, 1094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1070 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-06 22:57:04,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2748 states. [2023-11-06 22:57:04,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2748 to 1527. [2023-11-06 22:57:04,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1527 states, 1526 states have (on average 1.6585845347313237) internal successors, (2531), 1526 states have internal predecessors, (2531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:04,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1527 states to 1527 states and 2531 transitions. [2023-11-06 22:57:04,313 INFO L78 Accepts]: Start accepts. Automaton has 1527 states and 2531 transitions. Word has length 192 [2023-11-06 22:57:04,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:57:04,313 INFO L495 AbstractCegarLoop]: Abstraction has 1527 states and 2531 transitions. [2023-11-06 22:57:04,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 32.0) internal successors, (192), 6 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:04,314 INFO L276 IsEmpty]: Start isEmpty. Operand 1527 states and 2531 transitions. [2023-11-06 22:57:04,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-11-06 22:57:04,317 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:57:04,317 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:57:04,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-06 22:57:04,318 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:57:04,318 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:04,319 INFO L85 PathProgramCache]: Analyzing trace with hash 474839733, now seen corresponding path program 1 times [2023-11-06 22:57:04,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:04,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180514034] [2023-11-06 22:57:04,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:04,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:04,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:04,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:57:04,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:57:04,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180514034] [2023-11-06 22:57:04,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180514034] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:57:04,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:57:04,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:57:04,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365014111] [2023-11-06 22:57:04,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:57:04,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:57:04,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:57:04,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:57:04,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:57:04,975 INFO L87 Difference]: Start difference. First operand 1527 states and 2531 transitions. Second operand has 5 states, 5 states have (on average 38.6) internal successors, (193), 5 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:06,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:57:06,698 INFO L93 Difference]: Finished difference Result 4013 states and 6676 transitions. [2023-11-06 22:57:06,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:57:06,698 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 38.6) internal successors, (193), 5 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 193 [2023-11-06 22:57:06,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:57:06,704 INFO L225 Difference]: With dead ends: 4013 [2023-11-06 22:57:06,704 INFO L226 Difference]: Without dead ends: 2700 [2023-11-06 22:57:06,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:57:06,707 INFO L413 NwaCegarLoop]: 1776 mSDtfsCounter, 6513 mSDsluCounter, 3544 mSDsCounter, 0 mSdLazyCounter, 1613 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6513 SdHoareTripleChecker+Valid, 5320 SdHoareTripleChecker+Invalid, 1613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:57:06,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6513 Valid, 5320 Invalid, 1613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1613 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-06 22:57:06,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2700 states. [2023-11-06 22:57:06,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2700 to 1528. [2023-11-06 22:57:06,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1528 states, 1527 states have (on average 1.6581532416502947) internal successors, (2532), 1527 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:06,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1528 states to 1528 states and 2532 transitions. [2023-11-06 22:57:06,746 INFO L78 Accepts]: Start accepts. Automaton has 1528 states and 2532 transitions. Word has length 193 [2023-11-06 22:57:06,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:57:06,747 INFO L495 AbstractCegarLoop]: Abstraction has 1528 states and 2532 transitions. [2023-11-06 22:57:06,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.6) internal successors, (193), 5 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:06,747 INFO L276 IsEmpty]: Start isEmpty. Operand 1528 states and 2532 transitions. [2023-11-06 22:57:06,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-11-06 22:57:06,748 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:57:06,749 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:57:06,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-06 22:57:06,749 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:57:06,750 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:06,750 INFO L85 PathProgramCache]: Analyzing trace with hash 722986227, now seen corresponding path program 1 times [2023-11-06 22:57:06,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:06,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892045636] [2023-11-06 22:57:06,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:06,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:06,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:07,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:57:07,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:57:07,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892045636] [2023-11-06 22:57:07,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892045636] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:57:07,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:57:07,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:57:07,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315845104] [2023-11-06 22:57:07,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:57:07,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:57:07,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:57:07,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:57:07,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:57:07,187 INFO L87 Difference]: Start difference. First operand 1528 states and 2532 transitions. Second operand has 6 states, 6 states have (on average 32.166666666666664) internal successors, (193), 6 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:08,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:57:08,473 INFO L93 Difference]: Finished difference Result 4061 states and 6746 transitions. [2023-11-06 22:57:08,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:57:08,475 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 32.166666666666664) internal successors, (193), 6 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 193 [2023-11-06 22:57:08,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:57:08,480 INFO L225 Difference]: With dead ends: 4061 [2023-11-06 22:57:08,480 INFO L226 Difference]: Without dead ends: 2748 [2023-11-06 22:57:08,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:57:08,483 INFO L413 NwaCegarLoop]: 1932 mSDtfsCounter, 8575 mSDsluCounter, 4160 mSDsCounter, 0 mSdLazyCounter, 1068 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8575 SdHoareTripleChecker+Valid, 6092 SdHoareTripleChecker+Invalid, 1092 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1068 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:57:08,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8575 Valid, 6092 Invalid, 1092 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1068 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-06 22:57:08,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2748 states. [2023-11-06 22:57:08,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2748 to 1536. [2023-11-06 22:57:08,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1536 states, 1535 states have (on average 1.657328990228013) internal successors, (2544), 1535 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:08,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1536 states to 1536 states and 2544 transitions. [2023-11-06 22:57:08,526 INFO L78 Accepts]: Start accepts. Automaton has 1536 states and 2544 transitions. Word has length 193 [2023-11-06 22:57:08,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:57:08,526 INFO L495 AbstractCegarLoop]: Abstraction has 1536 states and 2544 transitions. [2023-11-06 22:57:08,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 32.166666666666664) internal successors, (193), 6 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:08,527 INFO L276 IsEmpty]: Start isEmpty. Operand 1536 states and 2544 transitions. [2023-11-06 22:57:08,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-11-06 22:57:08,528 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:57:08,528 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:57:08,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-06 22:57:08,529 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:57:08,529 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:08,529 INFO L85 PathProgramCache]: Analyzing trace with hash -282536233, now seen corresponding path program 1 times [2023-11-06 22:57:08,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:08,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793667010] [2023-11-06 22:57:08,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:08,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:08,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:08,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:57:08,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:57:08,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793667010] [2023-11-06 22:57:08,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793667010] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:57:08,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:57:08,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:57:08,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294255996] [2023-11-06 22:57:08,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:57:08,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:57:08,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:57:08,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:57:08,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:57:08,963 INFO L87 Difference]: Start difference. First operand 1536 states and 2544 transitions. Second operand has 6 states, 6 states have (on average 32.333333333333336) internal successors, (194), 6 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:10,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:57:10,246 INFO L93 Difference]: Finished difference Result 4061 states and 6745 transitions. [2023-11-06 22:57:10,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:57:10,247 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 32.333333333333336) internal successors, (194), 6 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 194 [2023-11-06 22:57:10,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:57:10,251 INFO L225 Difference]: With dead ends: 4061 [2023-11-06 22:57:10,251 INFO L226 Difference]: Without dead ends: 2748 [2023-11-06 22:57:10,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:57:10,254 INFO L413 NwaCegarLoop]: 1933 mSDtfsCounter, 8562 mSDsluCounter, 4160 mSDsCounter, 0 mSdLazyCounter, 1067 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8562 SdHoareTripleChecker+Valid, 6093 SdHoareTripleChecker+Invalid, 1091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1067 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:57:10,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8562 Valid, 6093 Invalid, 1091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1067 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-06 22:57:10,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2748 states. [2023-11-06 22:57:10,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2748 to 1542. [2023-11-06 22:57:10,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1542 states, 1541 states have (on average 1.6567164179104477) internal successors, (2553), 1541 states have internal predecessors, (2553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:10,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1542 states to 1542 states and 2553 transitions. [2023-11-06 22:57:10,296 INFO L78 Accepts]: Start accepts. Automaton has 1542 states and 2553 transitions. Word has length 194 [2023-11-06 22:57:10,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:57:10,296 INFO L495 AbstractCegarLoop]: Abstraction has 1542 states and 2553 transitions. [2023-11-06 22:57:10,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 32.333333333333336) internal successors, (194), 6 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:10,297 INFO L276 IsEmpty]: Start isEmpty. Operand 1542 states and 2553 transitions. [2023-11-06 22:57:10,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2023-11-06 22:57:10,298 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:57:10,299 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:57:10,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-06 22:57:10,299 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:57:10,299 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:10,300 INFO L85 PathProgramCache]: Analyzing trace with hash -415958295, now seen corresponding path program 1 times [2023-11-06 22:57:10,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:10,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698383661] [2023-11-06 22:57:10,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:10,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:10,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:10,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:57:10,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:57:10,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698383661] [2023-11-06 22:57:10,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698383661] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:57:10,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:57:10,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:57:10,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676507498] [2023-11-06 22:57:10,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:57:10,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:57:10,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:57:10,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:57:10,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:57:10,978 INFO L87 Difference]: Start difference. First operand 1542 states and 2553 transitions. Second operand has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:12,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:57:12,692 INFO L93 Difference]: Finished difference Result 4013 states and 6673 transitions. [2023-11-06 22:57:12,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:57:12,692 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 195 [2023-11-06 22:57:12,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:57:12,697 INFO L225 Difference]: With dead ends: 4013 [2023-11-06 22:57:12,698 INFO L226 Difference]: Without dead ends: 2700 [2023-11-06 22:57:12,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:57:12,701 INFO L413 NwaCegarLoop]: 1776 mSDtfsCounter, 6495 mSDsluCounter, 3544 mSDsCounter, 0 mSdLazyCounter, 1613 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6495 SdHoareTripleChecker+Valid, 5320 SdHoareTripleChecker+Invalid, 1613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:57:12,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6495 Valid, 5320 Invalid, 1613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1613 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-06 22:57:12,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2700 states. [2023-11-06 22:57:12,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2700 to 1543. [2023-11-06 22:57:12,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1543 states, 1542 states have (on average 1.6562905317769132) internal successors, (2554), 1542 states have internal predecessors, (2554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:12,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1543 states to 1543 states and 2554 transitions. [2023-11-06 22:57:12,744 INFO L78 Accepts]: Start accepts. Automaton has 1543 states and 2554 transitions. Word has length 195 [2023-11-06 22:57:12,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:57:12,745 INFO L495 AbstractCegarLoop]: Abstraction has 1543 states and 2554 transitions. [2023-11-06 22:57:12,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:12,745 INFO L276 IsEmpty]: Start isEmpty. Operand 1543 states and 2554 transitions. [2023-11-06 22:57:12,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2023-11-06 22:57:12,747 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:57:12,747 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:57:12,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-06 22:57:12,747 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:57:12,748 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:12,748 INFO L85 PathProgramCache]: Analyzing trace with hash -141198681, now seen corresponding path program 1 times [2023-11-06 22:57:12,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:12,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513326615] [2023-11-06 22:57:12,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:12,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:12,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:13,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:57:13,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:57:13,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513326615] [2023-11-06 22:57:13,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513326615] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:57:13,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:57:13,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:57:13,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239255595] [2023-11-06 22:57:13,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:57:13,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:57:13,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:57:13,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:57:13,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:57:13,230 INFO L87 Difference]: Start difference. First operand 1543 states and 2554 transitions. Second operand has 6 states, 6 states have (on average 32.5) internal successors, (195), 6 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:14,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:57:14,522 INFO L93 Difference]: Finished difference Result 4061 states and 6743 transitions. [2023-11-06 22:57:14,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:57:14,525 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 32.5) internal successors, (195), 6 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 195 [2023-11-06 22:57:14,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:57:14,531 INFO L225 Difference]: With dead ends: 4061 [2023-11-06 22:57:14,532 INFO L226 Difference]: Without dead ends: 2748 [2023-11-06 22:57:14,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:57:14,535 INFO L413 NwaCegarLoop]: 1935 mSDtfsCounter, 8546 mSDsluCounter, 4160 mSDsCounter, 0 mSdLazyCounter, 1065 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8546 SdHoareTripleChecker+Valid, 6095 SdHoareTripleChecker+Invalid, 1089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1065 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:57:14,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8546 Valid, 6095 Invalid, 1089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1065 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-06 22:57:14,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2748 states. [2023-11-06 22:57:14,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2748 to 1548. [2023-11-06 22:57:14,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1548 states, 1547 states have (on average 1.6554621848739495) internal successors, (2561), 1547 states have internal predecessors, (2561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:14,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1548 states to 1548 states and 2561 transitions. [2023-11-06 22:57:14,574 INFO L78 Accepts]: Start accepts. Automaton has 1548 states and 2561 transitions. Word has length 195 [2023-11-06 22:57:14,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:57:14,574 INFO L495 AbstractCegarLoop]: Abstraction has 1548 states and 2561 transitions. [2023-11-06 22:57:14,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 32.5) internal successors, (195), 6 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:14,575 INFO L276 IsEmpty]: Start isEmpty. Operand 1548 states and 2561 transitions. [2023-11-06 22:57:14,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2023-11-06 22:57:14,576 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:57:14,577 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:57:14,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-06 22:57:14,577 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:57:14,577 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:14,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1165925365, now seen corresponding path program 1 times [2023-11-06 22:57:14,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:14,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791603249] [2023-11-06 22:57:14,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:14,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:14,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:15,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:57:15,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:57:15,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791603249] [2023-11-06 22:57:15,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791603249] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:57:15,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:57:15,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:57:15,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861729723] [2023-11-06 22:57:15,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:57:15,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:57:15,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:57:15,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:57:15,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:57:15,067 INFO L87 Difference]: Start difference. First operand 1548 states and 2561 transitions. Second operand has 6 states, 6 states have (on average 32.666666666666664) internal successors, (196), 6 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:16,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:57:16,327 INFO L93 Difference]: Finished difference Result 4061 states and 6742 transitions. [2023-11-06 22:57:16,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:57:16,328 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 32.666666666666664) internal successors, (196), 6 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 196 [2023-11-06 22:57:16,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:57:16,332 INFO L225 Difference]: With dead ends: 4061 [2023-11-06 22:57:16,333 INFO L226 Difference]: Without dead ends: 2748 [2023-11-06 22:57:16,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:57:16,336 INFO L413 NwaCegarLoop]: 1936 mSDtfsCounter, 8533 mSDsluCounter, 4160 mSDsCounter, 0 mSdLazyCounter, 1064 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8533 SdHoareTripleChecker+Valid, 6096 SdHoareTripleChecker+Invalid, 1088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1064 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:57:16,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8533 Valid, 6096 Invalid, 1088 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1064 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-06 22:57:16,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2748 states. [2023-11-06 22:57:16,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2748 to 1554. [2023-11-06 22:57:16,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1554 states, 1553 states have (on average 1.6548615582743078) internal successors, (2570), 1553 states have internal predecessors, (2570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:16,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 2570 transitions. [2023-11-06 22:57:16,373 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 2570 transitions. Word has length 196 [2023-11-06 22:57:16,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:57:16,373 INFO L495 AbstractCegarLoop]: Abstraction has 1554 states and 2570 transitions. [2023-11-06 22:57:16,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 32.666666666666664) internal successors, (196), 6 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:16,374 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 2570 transitions. [2023-11-06 22:57:16,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2023-11-06 22:57:16,375 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:57:16,376 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:57:16,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-06 22:57:16,376 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:57:16,377 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:16,377 INFO L85 PathProgramCache]: Analyzing trace with hash 564483741, now seen corresponding path program 1 times [2023-11-06 22:57:16,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:16,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050712800] [2023-11-06 22:57:16,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:16,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:16,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:17,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:57:17,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:57:17,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050712800] [2023-11-06 22:57:17,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050712800] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:57:17,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:57:17,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:57:17,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611965750] [2023-11-06 22:57:17,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:57:17,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:57:17,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:57:17,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:57:17,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:57:17,153 INFO L87 Difference]: Start difference. First operand 1554 states and 2570 transitions. Second operand has 5 states, 5 states have (on average 39.4) internal successors, (197), 5 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:18,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:57:18,890 INFO L93 Difference]: Finished difference Result 4013 states and 6670 transitions. [2023-11-06 22:57:18,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:57:18,893 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 39.4) internal successors, (197), 5 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 197 [2023-11-06 22:57:18,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:57:18,899 INFO L225 Difference]: With dead ends: 4013 [2023-11-06 22:57:18,899 INFO L226 Difference]: Without dead ends: 2700 [2023-11-06 22:57:18,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:57:18,903 INFO L413 NwaCegarLoop]: 1776 mSDtfsCounter, 6479 mSDsluCounter, 3544 mSDsCounter, 0 mSdLazyCounter, 1613 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6479 SdHoareTripleChecker+Valid, 5320 SdHoareTripleChecker+Invalid, 1613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:57:18,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6479 Valid, 5320 Invalid, 1613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1613 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-06 22:57:18,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2700 states. [2023-11-06 22:57:18,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2700 to 1555. [2023-11-06 22:57:18,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1555 states, 1554 states have (on average 1.6544401544401544) internal successors, (2571), 1554 states have internal predecessors, (2571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:18,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1555 states to 1555 states and 2571 transitions. [2023-11-06 22:57:18,947 INFO L78 Accepts]: Start accepts. Automaton has 1555 states and 2571 transitions. Word has length 197 [2023-11-06 22:57:18,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:57:18,947 INFO L495 AbstractCegarLoop]: Abstraction has 1555 states and 2571 transitions. [2023-11-06 22:57:18,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.4) internal successors, (197), 5 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:18,948 INFO L276 IsEmpty]: Start isEmpty. Operand 1555 states and 2571 transitions. [2023-11-06 22:57:18,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2023-11-06 22:57:18,950 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:57:18,950 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:57:18,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-06 22:57:18,950 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:57:18,951 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:18,951 INFO L85 PathProgramCache]: Analyzing trace with hash 430470235, now seen corresponding path program 1 times [2023-11-06 22:57:18,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:18,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677824782] [2023-11-06 22:57:18,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:18,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:19,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:19,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:57:19,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:57:19,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677824782] [2023-11-06 22:57:19,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677824782] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:57:19,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:57:19,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:57:19,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202874366] [2023-11-06 22:57:19,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:57:19,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:57:19,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:57:19,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:57:19,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:57:19,481 INFO L87 Difference]: Start difference. First operand 1555 states and 2571 transitions. Second operand has 4 states, 4 states have (on average 49.25) internal successors, (197), 4 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:19,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:57:19,530 INFO L93 Difference]: Finished difference Result 1559 states and 2575 transitions. [2023-11-06 22:57:19,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:57:19,531 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 49.25) internal successors, (197), 4 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 197 [2023-11-06 22:57:19,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:57:19,560 INFO L225 Difference]: With dead ends: 1559 [2023-11-06 22:57:19,560 INFO L226 Difference]: Without dead ends: 1557 [2023-11-06 22:57:19,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:57:19,563 INFO L413 NwaCegarLoop]: 2309 mSDtfsCounter, 1 mSDsluCounter, 4612 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 6921 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:57:19,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 6921 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:57:19,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1557 states. [2023-11-06 22:57:19,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1557 to 1557. [2023-11-06 22:57:19,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1557 states, 1556 states have (on average 1.6535989717223651) internal successors, (2573), 1556 states have internal predecessors, (2573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:19,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1557 states to 1557 states and 2573 transitions. [2023-11-06 22:57:19,599 INFO L78 Accepts]: Start accepts. Automaton has 1557 states and 2573 transitions. Word has length 197 [2023-11-06 22:57:19,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:57:19,599 INFO L495 AbstractCegarLoop]: Abstraction has 1557 states and 2573 transitions. [2023-11-06 22:57:19,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.25) internal successors, (197), 4 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:19,600 INFO L276 IsEmpty]: Start isEmpty. Operand 1557 states and 2573 transitions. [2023-11-06 22:57:19,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2023-11-06 22:57:19,601 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:57:19,601 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:57:19,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-06 22:57:19,602 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:57:19,602 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:19,602 INFO L85 PathProgramCache]: Analyzing trace with hash 461461007, now seen corresponding path program 1 times [2023-11-06 22:57:19,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:19,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433436837] [2023-11-06 22:57:19,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:19,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:19,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:19,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:57:19,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:57:19,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433436837] [2023-11-06 22:57:19,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433436837] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:57:19,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:57:19,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:57:19,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973237696] [2023-11-06 22:57:19,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:57:19,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:57:19,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:57:19,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:57:19,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:57:19,934 INFO L87 Difference]: Start difference. First operand 1557 states and 2573 transitions. Second operand has 4 states, 4 states have (on average 49.5) internal successors, (198), 4 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:19,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:57:19,987 INFO L93 Difference]: Finished difference Result 2875 states and 4768 transitions. [2023-11-06 22:57:19,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:57:19,988 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 49.5) internal successors, (198), 4 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 198 [2023-11-06 22:57:19,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:57:19,993 INFO L225 Difference]: With dead ends: 2875 [2023-11-06 22:57:19,993 INFO L226 Difference]: Without dead ends: 1560 [2023-11-06 22:57:19,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:57:19,995 INFO L413 NwaCegarLoop]: 2309 mSDtfsCounter, 1 mSDsluCounter, 4609 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 6918 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:57:19,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 6918 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:57:19,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1560 states. [2023-11-06 22:57:20,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1560 to 1559. [2023-11-06 22:57:20,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1559 states, 1558 states have (on average 1.652759948652118) internal successors, (2575), 1558 states have internal predecessors, (2575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:20,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1559 states to 1559 states and 2575 transitions. [2023-11-06 22:57:20,025 INFO L78 Accepts]: Start accepts. Automaton has 1559 states and 2575 transitions. Word has length 198 [2023-11-06 22:57:20,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:57:20,026 INFO L495 AbstractCegarLoop]: Abstraction has 1559 states and 2575 transitions. [2023-11-06 22:57:20,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.5) internal successors, (198), 4 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:20,026 INFO L276 IsEmpty]: Start isEmpty. Operand 1559 states and 2575 transitions. [2023-11-06 22:57:20,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2023-11-06 22:57:20,028 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:57:20,028 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:57:20,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-06 22:57:20,029 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:57:20,029 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:20,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1208170483, now seen corresponding path program 1 times [2023-11-06 22:57:20,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:20,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423862637] [2023-11-06 22:57:20,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:20,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:20,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:20,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:57:20,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:57:20,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423862637] [2023-11-06 22:57:20,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423862637] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:57:20,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:57:20,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:57:20,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959776125] [2023-11-06 22:57:20,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:57:20,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:57:20,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:57:20,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:57:20,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:57:20,436 INFO L87 Difference]: Start difference. First operand 1559 states and 2575 transitions. Second operand has 5 states, 5 states have (on average 39.8) internal successors, (199), 5 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:20,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:57:20,555 INFO L93 Difference]: Finished difference Result 4210 states and 6991 transitions. [2023-11-06 22:57:20,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:57:20,556 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 39.8) internal successors, (199), 5 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 199 [2023-11-06 22:57:20,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:57:20,562 INFO L225 Difference]: With dead ends: 4210 [2023-11-06 22:57:20,562 INFO L226 Difference]: Without dead ends: 2893 [2023-11-06 22:57:20,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:57:20,566 INFO L413 NwaCegarLoop]: 2608 mSDtfsCounter, 8944 mSDsluCounter, 4611 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8944 SdHoareTripleChecker+Valid, 7219 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:57:20,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8944 Valid, 7219 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:57:20,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2893 states. [2023-11-06 22:57:20,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2893 to 1585. [2023-11-06 22:57:20,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1585 states, 1584 states have (on average 1.6521464646464648) internal successors, (2617), 1584 states have internal predecessors, (2617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:20,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 2617 transitions. [2023-11-06 22:57:20,601 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 2617 transitions. Word has length 199 [2023-11-06 22:57:20,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:57:20,602 INFO L495 AbstractCegarLoop]: Abstraction has 1585 states and 2617 transitions. [2023-11-06 22:57:20,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.8) internal successors, (199), 5 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:20,602 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 2617 transitions. [2023-11-06 22:57:20,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1055 [2023-11-06 22:57:20,614 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:57:20,616 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:57:20,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-06 22:57:20,616 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:57:20,617 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:20,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1969482043, now seen corresponding path program 1 times [2023-11-06 22:57:20,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:20,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914140621] [2023-11-06 22:57:20,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:20,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:20,790 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:57:20,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [731107947] [2023-11-06 22:57:20,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:20,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:57:20,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:57:20,801 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:57:20,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:57:22,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:22,346 INFO L262 TraceCheckSpWp]: Trace formula consists of 4812 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-06 22:57:22,392 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:57:23,034 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 4 proven. 130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:57:23,034 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:57:23,135 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2023-11-06 22:57:23,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:57:23,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914140621] [2023-11-06 22:57:23,136 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:57:23,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731107947] [2023-11-06 22:57:23,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [731107947] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 22:57:23,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:57:23,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-11-06 22:57:23,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803125835] [2023-11-06 22:57:23,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:57:23,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:57:23,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:57:23,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:57:23,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:57:23,143 INFO L87 Difference]: Start difference. First operand 1585 states and 2617 transitions. Second operand has 5 states, 5 states have (on average 187.8) internal successors, (939), 5 states have internal predecessors, (939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:23,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:57:23,330 INFO L93 Difference]: Finished difference Result 5529 states and 9184 transitions. [2023-11-06 22:57:23,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:57:23,331 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 187.8) internal successors, (939), 5 states have internal predecessors, (939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1054 [2023-11-06 22:57:23,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:57:23,341 INFO L225 Difference]: With dead ends: 5529 [2023-11-06 22:57:23,341 INFO L226 Difference]: Without dead ends: 4212 [2023-11-06 22:57:23,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2108 GetRequests, 2095 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2023-11-06 22:57:23,345 INFO L413 NwaCegarLoop]: 4793 mSDtfsCounter, 4364 mSDsluCounter, 11877 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4364 SdHoareTripleChecker+Valid, 16670 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:57:23,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4364 Valid, 16670 Invalid, 32 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:57:23,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4212 states. [2023-11-06 22:57:23,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4212 to 1585. [2023-11-06 22:57:23,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1585 states, 1584 states have (on average 1.6521464646464648) internal successors, (2617), 1584 states have internal predecessors, (2617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:23,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 2617 transitions. [2023-11-06 22:57:23,387 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 2617 transitions. Word has length 1054 [2023-11-06 22:57:23,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:57:23,391 INFO L495 AbstractCegarLoop]: Abstraction has 1585 states and 2617 transitions. [2023-11-06 22:57:23,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 187.8) internal successors, (939), 5 states have internal predecessors, (939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:23,391 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 2617 transitions. [2023-11-06 22:57:23,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1056 [2023-11-06 22:57:23,405 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:57:23,406 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:57:23,430 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:57:23,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-06 22:57:23,625 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:57:23,625 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:23,626 INFO L85 PathProgramCache]: Analyzing trace with hash 673719203, now seen corresponding path program 1 times [2023-11-06 22:57:23,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:23,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035122417] [2023-11-06 22:57:23,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:23,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:23,832 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:57:23,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [544171914] [2023-11-06 22:57:23,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:23,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:57:23,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:57:23,834 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:57:23,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:57:25,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:25,343 INFO L262 TraceCheckSpWp]: Trace formula consists of 4815 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-06 22:57:25,371 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:57:25,883 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 6 proven. 128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:57:25,884 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:57:25,942 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2023-11-06 22:57:25,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:57:25,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035122417] [2023-11-06 22:57:25,943 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:57:25,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544171914] [2023-11-06 22:57:25,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [544171914] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 22:57:25,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:57:25,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-11-06 22:57:25,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114397409] [2023-11-06 22:57:25,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:57:25,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:57:25,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:57:25,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:57:25,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:57:25,950 INFO L87 Difference]: Start difference. First operand 1585 states and 2617 transitions. Second operand has 4 states, 4 states have (on average 235.5) internal successors, (942), 4 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:26,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:57:26,049 INFO L93 Difference]: Finished difference Result 4217 states and 6998 transitions. [2023-11-06 22:57:26,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:57:26,050 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 235.5) internal successors, (942), 4 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1055 [2023-11-06 22:57:26,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:57:26,058 INFO L225 Difference]: With dead ends: 4217 [2023-11-06 22:57:26,058 INFO L226 Difference]: Without dead ends: 2897 [2023-11-06 22:57:26,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2109 GetRequests, 2099 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:57:26,063 INFO L413 NwaCegarLoop]: 2604 mSDtfsCounter, 2177 mSDsluCounter, 4902 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2177 SdHoareTripleChecker+Valid, 7506 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:57:26,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2177 Valid, 7506 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:57:26,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2897 states. [2023-11-06 22:57:26,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2897 to 1587. [2023-11-06 22:57:26,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1587 states, 1586 states have (on average 1.6513240857503153) internal successors, (2619), 1586 states have internal predecessors, (2619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:26,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1587 states to 1587 states and 2619 transitions. [2023-11-06 22:57:26,099 INFO L78 Accepts]: Start accepts. Automaton has 1587 states and 2619 transitions. Word has length 1055 [2023-11-06 22:57:26,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:57:26,101 INFO L495 AbstractCegarLoop]: Abstraction has 1587 states and 2619 transitions. [2023-11-06 22:57:26,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 235.5) internal successors, (942), 4 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:26,102 INFO L276 IsEmpty]: Start isEmpty. Operand 1587 states and 2619 transitions. [2023-11-06 22:57:26,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1057 [2023-11-06 22:57:26,116 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:57:26,119 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:57:26,142 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:57:26,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-06 22:57:26,337 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:57:26,337 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:26,338 INFO L85 PathProgramCache]: Analyzing trace with hash 920482591, now seen corresponding path program 1 times [2023-11-06 22:57:26,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:26,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592337011] [2023-11-06 22:57:26,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:26,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:26,493 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:57:26,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1295405911] [2023-11-06 22:57:26,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:26,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:57:26,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:57:26,495 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:57:26,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:57:27,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:27,911 INFO L262 TraceCheckSpWp]: Trace formula consists of 4818 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-06 22:57:27,937 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:57:28,443 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 8 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:57:28,444 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:57:28,588 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-11-06 22:57:28,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:57:28,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592337011] [2023-11-06 22:57:28,589 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:57:28,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1295405911] [2023-11-06 22:57:28,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1295405911] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 22:57:28,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:57:28,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-11-06 22:57:28,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417800378] [2023-11-06 22:57:28,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:57:28,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:57:28,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:57:28,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:57:28,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:57:28,595 INFO L87 Difference]: Start difference. First operand 1587 states and 2619 transitions. Second operand has 4 states, 4 states have (on average 236.25) internal successors, (945), 4 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:28,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:57:28,694 INFO L93 Difference]: Finished difference Result 4223 states and 7004 transitions. [2023-11-06 22:57:28,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:57:28,695 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 236.25) internal successors, (945), 4 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1056 [2023-11-06 22:57:28,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:57:28,702 INFO L225 Difference]: With dead ends: 4223 [2023-11-06 22:57:28,703 INFO L226 Difference]: Without dead ends: 2898 [2023-11-06 22:57:28,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2111 GetRequests, 2101 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:57:28,705 INFO L413 NwaCegarLoop]: 2599 mSDtfsCounter, 2174 mSDsluCounter, 4897 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2174 SdHoareTripleChecker+Valid, 7496 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:57:28,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2174 Valid, 7496 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:57:28,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2898 states. [2023-11-06 22:57:28,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2898 to 1589. [2023-11-06 22:57:28,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1589 states, 1588 states have (on average 1.6505037783375316) internal successors, (2621), 1588 states have internal predecessors, (2621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:28,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1589 states to 1589 states and 2621 transitions. [2023-11-06 22:57:28,745 INFO L78 Accepts]: Start accepts. Automaton has 1589 states and 2621 transitions. Word has length 1056 [2023-11-06 22:57:28,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:57:28,747 INFO L495 AbstractCegarLoop]: Abstraction has 1589 states and 2621 transitions. [2023-11-06 22:57:28,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 236.25) internal successors, (945), 4 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:28,748 INFO L276 IsEmpty]: Start isEmpty. Operand 1589 states and 2621 transitions. [2023-11-06 22:57:28,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1058 [2023-11-06 22:57:28,760 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:57:28,761 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:57:28,786 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:57:28,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-06 22:57:28,979 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:57:28,979 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:28,979 INFO L85 PathProgramCache]: Analyzing trace with hash -1302065145, now seen corresponding path program 1 times [2023-11-06 22:57:28,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:28,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509783308] [2023-11-06 22:57:28,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:28,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:29,126 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:57:29,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1388270932] [2023-11-06 22:57:29,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:29,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:57:29,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:57:29,128 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:57:29,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:57:30,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:30,481 INFO L262 TraceCheckSpWp]: Trace formula consists of 4822 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-06 22:57:30,514 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:57:31,002 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 10 proven. 124 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:57:31,003 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:57:31,057 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2023-11-06 22:57:31,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:57:31,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509783308] [2023-11-06 22:57:31,058 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:57:31,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1388270932] [2023-11-06 22:57:31,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1388270932] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 22:57:31,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:57:31,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-11-06 22:57:31,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414658000] [2023-11-06 22:57:31,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:57:31,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:57:31,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:57:31,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:57:31,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:57:31,064 INFO L87 Difference]: Start difference. First operand 1589 states and 2621 transitions. Second operand has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:31,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:57:31,162 INFO L93 Difference]: Finished difference Result 4229 states and 7010 transitions. [2023-11-06 22:57:31,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:57:31,162 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1057 [2023-11-06 22:57:31,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:57:31,171 INFO L225 Difference]: With dead ends: 4229 [2023-11-06 22:57:31,171 INFO L226 Difference]: Without dead ends: 2899 [2023-11-06 22:57:31,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2113 GetRequests, 2103 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:57:31,175 INFO L413 NwaCegarLoop]: 2594 mSDtfsCounter, 2171 mSDsluCounter, 4892 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2171 SdHoareTripleChecker+Valid, 7486 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:57:31,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2171 Valid, 7486 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:57:31,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2899 states. [2023-11-06 22:57:31,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2899 to 1591. [2023-11-06 22:57:31,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1591 states, 1590 states have (on average 1.649685534591195) internal successors, (2623), 1590 states have internal predecessors, (2623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:31,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1591 states to 1591 states and 2623 transitions. [2023-11-06 22:57:31,213 INFO L78 Accepts]: Start accepts. Automaton has 1591 states and 2623 transitions. Word has length 1057 [2023-11-06 22:57:31,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:57:31,215 INFO L495 AbstractCegarLoop]: Abstraction has 1591 states and 2623 transitions. [2023-11-06 22:57:31,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:31,216 INFO L276 IsEmpty]: Start isEmpty. Operand 1591 states and 2623 transitions. [2023-11-06 22:57:31,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1059 [2023-11-06 22:57:31,228 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:57:31,229 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:57:31,253 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:57:31,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-06 22:57:31,448 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:57:31,448 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:31,449 INFO L85 PathProgramCache]: Analyzing trace with hash 885831991, now seen corresponding path program 1 times [2023-11-06 22:57:31,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:31,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373916737] [2023-11-06 22:57:31,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:31,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:31,591 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:57:31,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1572112348] [2023-11-06 22:57:31,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:31,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:57:31,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:57:31,593 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:57:31,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:57:32,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:32,956 INFO L262 TraceCheckSpWp]: Trace formula consists of 4825 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-06 22:57:32,989 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:57:33,495 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 12 proven. 122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:57:33,495 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:57:33,544 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2023-11-06 22:57:33,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:57:33,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373916737] [2023-11-06 22:57:33,545 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:57:33,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572112348] [2023-11-06 22:57:33,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1572112348] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 22:57:33,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:57:33,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-11-06 22:57:33,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455064570] [2023-11-06 22:57:33,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:57:33,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:57:33,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:57:33,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:57:33,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:57:33,551 INFO L87 Difference]: Start difference. First operand 1591 states and 2623 transitions. Second operand has 4 states, 4 states have (on average 237.75) internal successors, (951), 4 states have internal predecessors, (951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:33,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:57:33,647 INFO L93 Difference]: Finished difference Result 4235 states and 7016 transitions. [2023-11-06 22:57:33,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:57:33,648 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 237.75) internal successors, (951), 4 states have internal predecessors, (951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1058 [2023-11-06 22:57:33,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:57:33,655 INFO L225 Difference]: With dead ends: 4235 [2023-11-06 22:57:33,655 INFO L226 Difference]: Without dead ends: 2900 [2023-11-06 22:57:33,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2115 GetRequests, 2105 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:57:33,659 INFO L413 NwaCegarLoop]: 2589 mSDtfsCounter, 2168 mSDsluCounter, 4887 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2168 SdHoareTripleChecker+Valid, 7476 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:57:33,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2168 Valid, 7476 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:57:33,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2900 states. [2023-11-06 22:57:33,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2900 to 1593. [2023-11-06 22:57:33,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1593 states, 1592 states have (on average 1.6488693467336684) internal successors, (2625), 1592 states have internal predecessors, (2625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:33,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1593 states to 1593 states and 2625 transitions. [2023-11-06 22:57:33,696 INFO L78 Accepts]: Start accepts. Automaton has 1593 states and 2625 transitions. Word has length 1058 [2023-11-06 22:57:33,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:57:33,701 INFO L495 AbstractCegarLoop]: Abstraction has 1593 states and 2625 transitions. [2023-11-06 22:57:33,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 237.75) internal successors, (951), 4 states have internal predecessors, (951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:33,702 INFO L276 IsEmpty]: Start isEmpty. Operand 1593 states and 2625 transitions. [2023-11-06 22:57:33,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1060 [2023-11-06 22:57:33,715 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:57:33,716 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:57:33,734 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:57:33,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-06 22:57:33,933 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:57:33,934 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:33,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1264614739, now seen corresponding path program 1 times [2023-11-06 22:57:33,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:33,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439432658] [2023-11-06 22:57:33,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:33,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:34,081 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:57:34,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1955087477] [2023-11-06 22:57:34,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:34,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:57:34,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:57:34,083 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:57:34,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 22:57:35,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:35,470 INFO L262 TraceCheckSpWp]: Trace formula consists of 4828 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-06 22:57:35,502 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:57:35,956 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 14 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:57:35,956 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:57:36,005 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2023-11-06 22:57:36,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:57:36,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439432658] [2023-11-06 22:57:36,005 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:57:36,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955087477] [2023-11-06 22:57:36,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1955087477] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 22:57:36,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:57:36,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-11-06 22:57:36,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568731714] [2023-11-06 22:57:36,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:57:36,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:57:36,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:57:36,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:57:36,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:57:36,011 INFO L87 Difference]: Start difference. First operand 1593 states and 2625 transitions. Second operand has 4 states, 4 states have (on average 238.5) internal successors, (954), 4 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:36,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:57:36,104 INFO L93 Difference]: Finished difference Result 4241 states and 7022 transitions. [2023-11-06 22:57:36,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:57:36,105 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 238.5) internal successors, (954), 4 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1059 [2023-11-06 22:57:36,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:57:36,113 INFO L225 Difference]: With dead ends: 4241 [2023-11-06 22:57:36,113 INFO L226 Difference]: Without dead ends: 2901 [2023-11-06 22:57:36,115 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2117 GetRequests, 2107 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:57:36,116 INFO L413 NwaCegarLoop]: 2584 mSDtfsCounter, 2165 mSDsluCounter, 4882 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2165 SdHoareTripleChecker+Valid, 7466 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:57:36,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2165 Valid, 7466 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:57:36,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2901 states. [2023-11-06 22:57:36,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2901 to 1595. [2023-11-06 22:57:36,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1595 states, 1594 states have (on average 1.6480552070263488) internal successors, (2627), 1594 states have internal predecessors, (2627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:36,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1595 states to 1595 states and 2627 transitions. [2023-11-06 22:57:36,153 INFO L78 Accepts]: Start accepts. Automaton has 1595 states and 2627 transitions. Word has length 1059 [2023-11-06 22:57:36,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:57:36,155 INFO L495 AbstractCegarLoop]: Abstraction has 1595 states and 2627 transitions. [2023-11-06 22:57:36,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 238.5) internal successors, (954), 4 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:36,155 INFO L276 IsEmpty]: Start isEmpty. Operand 1595 states and 2627 transitions. [2023-11-06 22:57:36,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1061 [2023-11-06 22:57:36,168 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:57:36,169 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:57:36,193 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 22:57:36,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-06 22:57:36,388 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:57:36,388 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:36,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1021865583, now seen corresponding path program 1 times [2023-11-06 22:57:36,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:36,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993219196] [2023-11-06 22:57:36,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:36,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:36,528 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:57:36,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [590999473] [2023-11-06 22:57:36,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:36,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:57:36,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:57:36,530 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:57:36,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 22:57:37,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:37,858 INFO L262 TraceCheckSpWp]: Trace formula consists of 4831 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-06 22:57:37,879 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:57:38,374 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 16 proven. 118 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:57:38,374 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:57:38,422 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2023-11-06 22:57:38,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:57:38,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993219196] [2023-11-06 22:57:38,422 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:57:38,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590999473] [2023-11-06 22:57:38,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [590999473] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 22:57:38,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:57:38,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-11-06 22:57:38,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960193318] [2023-11-06 22:57:38,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:57:38,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:57:38,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:57:38,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:57:38,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:57:38,429 INFO L87 Difference]: Start difference. First operand 1595 states and 2627 transitions. Second operand has 4 states, 4 states have (on average 239.25) internal successors, (957), 4 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:38,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:57:38,528 INFO L93 Difference]: Finished difference Result 4247 states and 7028 transitions. [2023-11-06 22:57:38,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:57:38,529 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 239.25) internal successors, (957), 4 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1060 [2023-11-06 22:57:38,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:57:38,538 INFO L225 Difference]: With dead ends: 4247 [2023-11-06 22:57:38,538 INFO L226 Difference]: Without dead ends: 2902 [2023-11-06 22:57:38,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2119 GetRequests, 2109 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:57:38,542 INFO L413 NwaCegarLoop]: 2579 mSDtfsCounter, 2162 mSDsluCounter, 4877 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2162 SdHoareTripleChecker+Valid, 7456 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:57:38,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2162 Valid, 7456 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:57:38,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2902 states. [2023-11-06 22:57:38,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2902 to 1597. [2023-11-06 22:57:38,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1597 states, 1596 states have (on average 1.6472431077694236) internal successors, (2629), 1596 states have internal predecessors, (2629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:38,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1597 states to 1597 states and 2629 transitions. [2023-11-06 22:57:38,583 INFO L78 Accepts]: Start accepts. Automaton has 1597 states and 2629 transitions. Word has length 1060 [2023-11-06 22:57:38,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:57:38,585 INFO L495 AbstractCegarLoop]: Abstraction has 1597 states and 2629 transitions. [2023-11-06 22:57:38,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 239.25) internal successors, (957), 4 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:38,587 INFO L276 IsEmpty]: Start isEmpty. Operand 1597 states and 2629 transitions. [2023-11-06 22:57:38,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1062 [2023-11-06 22:57:38,599 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:57:38,600 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:57:38,625 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-06 22:57:38,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-06 22:57:38,816 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:57:38,817 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:38,817 INFO L85 PathProgramCache]: Analyzing trace with hash -859101679, now seen corresponding path program 1 times [2023-11-06 22:57:38,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:38,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415751440] [2023-11-06 22:57:38,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:38,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:38,948 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:57:38,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [332595921] [2023-11-06 22:57:38,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:38,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:57:38,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:57:38,950 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:57:38,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-06 22:57:40,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:40,304 INFO L262 TraceCheckSpWp]: Trace formula consists of 4835 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-06 22:57:40,322 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:57:40,782 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 18 proven. 116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:57:40,782 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:57:40,830 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2023-11-06 22:57:40,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:57:40,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415751440] [2023-11-06 22:57:40,831 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:57:40,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332595921] [2023-11-06 22:57:40,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [332595921] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 22:57:40,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:57:40,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-11-06 22:57:40,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580792824] [2023-11-06 22:57:40,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:57:40,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:57:40,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:57:40,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:57:40,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:57:40,837 INFO L87 Difference]: Start difference. First operand 1597 states and 2629 transitions. Second operand has 4 states, 4 states have (on average 240.0) internal successors, (960), 4 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:40,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:57:40,994 INFO L93 Difference]: Finished difference Result 4253 states and 7034 transitions. [2023-11-06 22:57:40,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:57:40,995 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 240.0) internal successors, (960), 4 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1061 [2023-11-06 22:57:40,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:57:41,003 INFO L225 Difference]: With dead ends: 4253 [2023-11-06 22:57:41,004 INFO L226 Difference]: Without dead ends: 2903 [2023-11-06 22:57:41,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2121 GetRequests, 2111 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:57:41,006 INFO L413 NwaCegarLoop]: 2574 mSDtfsCounter, 2159 mSDsluCounter, 4872 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2159 SdHoareTripleChecker+Valid, 7446 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:57:41,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2159 Valid, 7446 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:57:41,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2903 states. [2023-11-06 22:57:41,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2903 to 1599. [2023-11-06 22:57:41,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1599 states, 1598 states have (on average 1.646433041301627) internal successors, (2631), 1598 states have internal predecessors, (2631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:41,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1599 states to 1599 states and 2631 transitions. [2023-11-06 22:57:41,041 INFO L78 Accepts]: Start accepts. Automaton has 1599 states and 2631 transitions. Word has length 1061 [2023-11-06 22:57:41,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:57:41,043 INFO L495 AbstractCegarLoop]: Abstraction has 1599 states and 2631 transitions. [2023-11-06 22:57:41,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 240.0) internal successors, (960), 4 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:41,044 INFO L276 IsEmpty]: Start isEmpty. Operand 1599 states and 2631 transitions. [2023-11-06 22:57:41,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1063 [2023-11-06 22:57:41,056 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:57:41,057 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:57:41,083 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-06 22:57:41,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:57:41,273 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:57:41,273 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:41,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1850153303, now seen corresponding path program 1 times [2023-11-06 22:57:41,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:41,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319017763] [2023-11-06 22:57:41,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:41,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:41,405 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:57:41,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2140968023] [2023-11-06 22:57:41,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:41,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:57:41,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:57:41,407 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:57:41,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-06 22:57:42,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:42,784 INFO L262 TraceCheckSpWp]: Trace formula consists of 4838 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-06 22:57:42,804 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:57:43,264 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 20 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:57:43,264 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:57:43,316 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2023-11-06 22:57:43,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:57:43,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319017763] [2023-11-06 22:57:43,317 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:57:43,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2140968023] [2023-11-06 22:57:43,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2140968023] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 22:57:43,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:57:43,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-11-06 22:57:43,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654438451] [2023-11-06 22:57:43,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:57:43,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:57:43,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:57:43,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:57:43,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:57:43,323 INFO L87 Difference]: Start difference. First operand 1599 states and 2631 transitions. Second operand has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:43,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:57:43,414 INFO L93 Difference]: Finished difference Result 4262 states and 7043 transitions. [2023-11-06 22:57:43,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:57:43,415 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1062 [2023-11-06 22:57:43,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:57:43,420 INFO L225 Difference]: With dead ends: 4262 [2023-11-06 22:57:43,421 INFO L226 Difference]: Without dead ends: 2907 [2023-11-06 22:57:43,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2123 GetRequests, 2113 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:57:43,424 INFO L413 NwaCegarLoop]: 2566 mSDtfsCounter, 2154 mSDsluCounter, 4864 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2154 SdHoareTripleChecker+Valid, 7430 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:57:43,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2154 Valid, 7430 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:57:43,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2907 states. [2023-11-06 22:57:43,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2907 to 1607. [2023-11-06 22:57:43,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1607 states, 1606 states have (on average 1.6444582814445827) internal successors, (2641), 1606 states have internal predecessors, (2641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:43,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1607 states to 1607 states and 2641 transitions. [2023-11-06 22:57:43,460 INFO L78 Accepts]: Start accepts. Automaton has 1607 states and 2641 transitions. Word has length 1062 [2023-11-06 22:57:43,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:57:43,462 INFO L495 AbstractCegarLoop]: Abstraction has 1607 states and 2641 transitions. [2023-11-06 22:57:43,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:43,462 INFO L276 IsEmpty]: Start isEmpty. Operand 1607 states and 2641 transitions. [2023-11-06 22:57:43,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1064 [2023-11-06 22:57:43,475 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:57:43,476 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:57:43,500 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-06 22:57:43,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:57:43,694 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:57:43,695 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:43,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1208348381, now seen corresponding path program 1 times [2023-11-06 22:57:43,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:43,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367023072] [2023-11-06 22:57:43,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:43,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:43,817 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:57:43,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [86775573] [2023-11-06 22:57:43,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:43,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:57:43,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:57:43,819 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:57:43,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-06 22:57:45,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:45,130 INFO L262 TraceCheckSpWp]: Trace formula consists of 4841 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-06 22:57:45,149 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:57:45,644 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 24 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:57:45,644 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:57:45,692 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2023-11-06 22:57:45,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:57:45,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367023072] [2023-11-06 22:57:45,693 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:57:45,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86775573] [2023-11-06 22:57:45,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [86775573] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 22:57:45,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:57:45,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-11-06 22:57:45,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600381789] [2023-11-06 22:57:45,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:57:45,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:57:45,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:57:45,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:57:45,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:57:45,699 INFO L87 Difference]: Start difference. First operand 1607 states and 2641 transitions. Second operand has 4 states, 4 states have (on average 242.0) internal successors, (968), 4 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:45,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:57:45,788 INFO L93 Difference]: Finished difference Result 4283 states and 7069 transitions. [2023-11-06 22:57:45,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:57:45,789 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 242.0) internal successors, (968), 4 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1063 [2023-11-06 22:57:45,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:57:45,794 INFO L225 Difference]: With dead ends: 4283 [2023-11-06 22:57:45,794 INFO L226 Difference]: Without dead ends: 2917 [2023-11-06 22:57:45,797 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2125 GetRequests, 2115 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:57:45,797 INFO L413 NwaCegarLoop]: 2557 mSDtfsCounter, 2151 mSDsluCounter, 4855 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2151 SdHoareTripleChecker+Valid, 7412 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:57:45,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2151 Valid, 7412 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:57:45,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2917 states. [2023-11-06 22:57:45,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2917 to 1617. [2023-11-06 22:57:45,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1617 states, 1616 states have (on average 1.6423267326732673) internal successors, (2654), 1616 states have internal predecessors, (2654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:45,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1617 states to 1617 states and 2654 transitions. [2023-11-06 22:57:45,834 INFO L78 Accepts]: Start accepts. Automaton has 1617 states and 2654 transitions. Word has length 1063 [2023-11-06 22:57:45,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:57:45,835 INFO L495 AbstractCegarLoop]: Abstraction has 1617 states and 2654 transitions. [2023-11-06 22:57:45,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 242.0) internal successors, (968), 4 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:45,836 INFO L276 IsEmpty]: Start isEmpty. Operand 1617 states and 2654 transitions. [2023-11-06 22:57:45,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1065 [2023-11-06 22:57:45,848 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:57:45,849 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:57:45,867 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-06 22:57:46,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:57:46,068 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:57:46,068 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:46,069 INFO L85 PathProgramCache]: Analyzing trace with hash -664996131, now seen corresponding path program 1 times [2023-11-06 22:57:46,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:46,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376812062] [2023-11-06 22:57:46,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:46,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:46,201 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:57:46,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [800636824] [2023-11-06 22:57:46,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:46,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:57:46,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:57:46,202 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:57:46,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-06 22:57:47,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:47,544 INFO L262 TraceCheckSpWp]: Trace formula consists of 4844 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-06 22:57:47,561 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:57:48,002 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 28 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:57:48,003 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:57:48,049 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2023-11-06 22:57:48,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:57:48,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376812062] [2023-11-06 22:57:48,049 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:57:48,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800636824] [2023-11-06 22:57:48,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [800636824] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 22:57:48,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:57:48,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-11-06 22:57:48,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838619265] [2023-11-06 22:57:48,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:57:48,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:57:48,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:57:48,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:57:48,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:57:48,054 INFO L87 Difference]: Start difference. First operand 1617 states and 2654 transitions. Second operand has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:48,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:57:48,141 INFO L93 Difference]: Finished difference Result 4311 states and 7103 transitions. [2023-11-06 22:57:48,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:57:48,142 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1064 [2023-11-06 22:57:48,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:57:48,148 INFO L225 Difference]: With dead ends: 4311 [2023-11-06 22:57:48,148 INFO L226 Difference]: Without dead ends: 2931 [2023-11-06 22:57:48,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2127 GetRequests, 2117 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:57:48,151 INFO L413 NwaCegarLoop]: 2549 mSDtfsCounter, 2148 mSDsluCounter, 4847 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2148 SdHoareTripleChecker+Valid, 7396 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:57:48,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2148 Valid, 7396 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:57:48,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2931 states. [2023-11-06 22:57:48,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2931 to 1627. [2023-11-06 22:57:48,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1627 states, 1626 states have (on average 1.6396063960639606) internal successors, (2666), 1626 states have internal predecessors, (2666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:48,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1627 states to 1627 states and 2666 transitions. [2023-11-06 22:57:48,186 INFO L78 Accepts]: Start accepts. Automaton has 1627 states and 2666 transitions. Word has length 1064 [2023-11-06 22:57:48,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:57:48,187 INFO L495 AbstractCegarLoop]: Abstraction has 1627 states and 2666 transitions. [2023-11-06 22:57:48,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:48,188 INFO L276 IsEmpty]: Start isEmpty. Operand 1627 states and 2666 transitions. [2023-11-06 22:57:48,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1066 [2023-11-06 22:57:48,200 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:57:48,201 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:57:48,219 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-06 22:57:48,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:57:48,418 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:57:48,418 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:48,418 INFO L85 PathProgramCache]: Analyzing trace with hash 243914153, now seen corresponding path program 1 times [2023-11-06 22:57:48,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:48,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754350400] [2023-11-06 22:57:48,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:48,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:48,529 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:57:48,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1286173978] [2023-11-06 22:57:48,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:48,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:57:48,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:57:48,531 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:57:48,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-06 22:57:49,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:49,787 INFO L262 TraceCheckSpWp]: Trace formula consists of 4847 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-06 22:57:49,800 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:57:50,312 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 32 proven. 102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:57:50,312 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:57:50,351 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2023-11-06 22:57:50,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:57:50,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754350400] [2023-11-06 22:57:50,352 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:57:50,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286173978] [2023-11-06 22:57:50,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1286173978] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 22:57:50,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:57:50,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-11-06 22:57:50,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074821594] [2023-11-06 22:57:50,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:57:50,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:57:50,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:57:50,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:57:50,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:57:50,358 INFO L87 Difference]: Start difference. First operand 1627 states and 2666 transitions. Second operand has 4 states, 4 states have (on average 244.0) internal successors, (976), 4 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:50,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:57:50,427 INFO L93 Difference]: Finished difference Result 4341 states and 7139 transitions. [2023-11-06 22:57:50,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:57:50,428 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 244.0) internal successors, (976), 4 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1065 [2023-11-06 22:57:50,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:57:50,433 INFO L225 Difference]: With dead ends: 4341 [2023-11-06 22:57:50,433 INFO L226 Difference]: Without dead ends: 2945 [2023-11-06 22:57:50,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2129 GetRequests, 2119 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:57:50,436 INFO L413 NwaCegarLoop]: 2540 mSDtfsCounter, 2145 mSDsluCounter, 4838 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2145 SdHoareTripleChecker+Valid, 7378 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:57:50,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2145 Valid, 7378 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:57:50,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2945 states. [2023-11-06 22:57:50,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2945 to 1637. [2023-11-06 22:57:50,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1637 states, 1636 states have (on average 1.6375305623471883) internal successors, (2679), 1636 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:50,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1637 states to 1637 states and 2679 transitions. [2023-11-06 22:57:50,471 INFO L78 Accepts]: Start accepts. Automaton has 1637 states and 2679 transitions. Word has length 1065 [2023-11-06 22:57:50,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:57:50,473 INFO L495 AbstractCegarLoop]: Abstraction has 1637 states and 2679 transitions. [2023-11-06 22:57:50,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 244.0) internal successors, (976), 4 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:50,473 INFO L276 IsEmpty]: Start isEmpty. Operand 1637 states and 2679 transitions. [2023-11-06 22:57:50,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1067 [2023-11-06 22:57:50,485 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:57:50,486 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:57:50,504 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-06 22:57:50,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:57:50,703 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:57:50,703 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:50,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1370339055, now seen corresponding path program 1 times [2023-11-06 22:57:50,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:50,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449453026] [2023-11-06 22:57:50,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:50,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:50,826 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:57:50,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1040968258] [2023-11-06 22:57:50,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:50,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:57:50,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:57:50,828 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:57:50,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-06 22:57:52,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:52,094 INFO L262 TraceCheckSpWp]: Trace formula consists of 4850 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-06 22:57:52,106 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:57:52,581 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 36 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:57:52,581 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:57:52,629 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2023-11-06 22:57:52,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:57:52,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449453026] [2023-11-06 22:57:52,630 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:57:52,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040968258] [2023-11-06 22:57:52,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040968258] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 22:57:52,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:57:52,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-11-06 22:57:52,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412236071] [2023-11-06 22:57:52,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:57:52,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:57:52,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:57:52,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:57:52,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:57:52,638 INFO L87 Difference]: Start difference. First operand 1637 states and 2679 transitions. Second operand has 4 states, 4 states have (on average 244.75) internal successors, (979), 4 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:52,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:57:52,711 INFO L93 Difference]: Finished difference Result 4368 states and 7172 transitions. [2023-11-06 22:57:52,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:57:52,712 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 244.75) internal successors, (979), 4 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1066 [2023-11-06 22:57:52,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:57:52,720 INFO L225 Difference]: With dead ends: 4368 [2023-11-06 22:57:52,720 INFO L226 Difference]: Without dead ends: 2956 [2023-11-06 22:57:52,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2131 GetRequests, 2121 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:57:52,724 INFO L413 NwaCegarLoop]: 2535 mSDtfsCounter, 2144 mSDsluCounter, 4833 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2144 SdHoareTripleChecker+Valid, 7368 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:57:52,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2144 Valid, 7368 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:57:52,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2956 states. [2023-11-06 22:57:52,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2956 to 1641. [2023-11-06 22:57:52,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1641 states, 1640 states have (on average 1.6359756097560976) internal successors, (2683), 1640 states have internal predecessors, (2683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:52,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1641 states to 1641 states and 2683 transitions. [2023-11-06 22:57:52,761 INFO L78 Accepts]: Start accepts. Automaton has 1641 states and 2683 transitions. Word has length 1066 [2023-11-06 22:57:52,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:57:52,762 INFO L495 AbstractCegarLoop]: Abstraction has 1641 states and 2683 transitions. [2023-11-06 22:57:52,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 244.75) internal successors, (979), 4 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:52,763 INFO L276 IsEmpty]: Start isEmpty. Operand 1641 states and 2683 transitions. [2023-11-06 22:57:52,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1068 [2023-11-06 22:57:52,775 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:57:52,775 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:57:52,801 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-06 22:57:52,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:57:52,989 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:57:52,990 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:52,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1249015631, now seen corresponding path program 1 times [2023-11-06 22:57:52,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:52,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221312062] [2023-11-06 22:57:52,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:52,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:53,122 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:57:53,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [963899230] [2023-11-06 22:57:53,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:53,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:57:53,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:57:53,125 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:57:53,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-06 22:57:54,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:54,422 INFO L262 TraceCheckSpWp]: Trace formula consists of 4853 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-06 22:57:54,435 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:57:54,862 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 38 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:57:54,862 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:57:54,918 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2023-11-06 22:57:54,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:57:54,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221312062] [2023-11-06 22:57:54,919 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:57:54,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963899230] [2023-11-06 22:57:54,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [963899230] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 22:57:54,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:57:54,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-11-06 22:57:54,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179384789] [2023-11-06 22:57:54,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:57:54,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:57:54,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:57:54,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:57:54,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:57:54,925 INFO L87 Difference]: Start difference. First operand 1641 states and 2683 transitions. Second operand has 4 states, 4 states have (on average 245.75) internal successors, (983), 4 states have internal predecessors, (983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:55,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:57:55,009 INFO L93 Difference]: Finished difference Result 4386 states and 7191 transitions. [2023-11-06 22:57:55,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:57:55,009 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 245.75) internal successors, (983), 4 states have internal predecessors, (983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1067 [2023-11-06 22:57:55,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:57:55,015 INFO L225 Difference]: With dead ends: 4386 [2023-11-06 22:57:55,015 INFO L226 Difference]: Without dead ends: 2964 [2023-11-06 22:57:55,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2133 GetRequests, 2123 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:57:55,018 INFO L413 NwaCegarLoop]: 2527 mSDtfsCounter, 2139 mSDsluCounter, 4825 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2139 SdHoareTripleChecker+Valid, 7352 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:57:55,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2139 Valid, 7352 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:57:55,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2964 states. [2023-11-06 22:57:55,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2964 to 1651. [2023-11-06 22:57:55,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1651 states, 1650 states have (on average 1.6333333333333333) internal successors, (2695), 1650 states have internal predecessors, (2695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:55,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1651 states to 1651 states and 2695 transitions. [2023-11-06 22:57:55,055 INFO L78 Accepts]: Start accepts. Automaton has 1651 states and 2695 transitions. Word has length 1067 [2023-11-06 22:57:55,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:57:55,057 INFO L495 AbstractCegarLoop]: Abstraction has 1651 states and 2695 transitions. [2023-11-06 22:57:55,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 245.75) internal successors, (983), 4 states have internal predecessors, (983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:55,057 INFO L276 IsEmpty]: Start isEmpty. Operand 1651 states and 2695 transitions. [2023-11-06 22:57:55,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1069 [2023-11-06 22:57:55,068 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:57:55,069 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:57:55,093 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-06 22:57:55,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:57:55,289 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:57:55,289 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:55,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1329803015, now seen corresponding path program 1 times [2023-11-06 22:57:55,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:55,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614437776] [2023-11-06 22:57:55,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:55,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:55,425 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:57:55,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [764077298] [2023-11-06 22:57:55,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:55,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:57:55,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:57:55,427 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:57:55,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-06 22:57:56,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:56,719 INFO L262 TraceCheckSpWp]: Trace formula consists of 4857 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-06 22:57:56,733 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:57:57,209 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 42 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:57:57,209 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:57:57,255 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2023-11-06 22:57:57,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:57:57,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614437776] [2023-11-06 22:57:57,255 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:57:57,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764077298] [2023-11-06 22:57:57,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [764077298] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 22:57:57,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:57:57,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-11-06 22:57:57,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47269433] [2023-11-06 22:57:57,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:57:57,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:57:57,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:57:57,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:57:57,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:57:57,261 INFO L87 Difference]: Start difference. First operand 1651 states and 2695 transitions. Second operand has 4 states, 4 states have (on average 246.75) internal successors, (987), 4 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:57,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:57:57,351 INFO L93 Difference]: Finished difference Result 4413 states and 7222 transitions. [2023-11-06 22:57:57,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:57:57,352 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 246.75) internal successors, (987), 4 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1068 [2023-11-06 22:57:57,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:57:57,356 INFO L225 Difference]: With dead ends: 4413 [2023-11-06 22:57:57,357 INFO L226 Difference]: Without dead ends: 2978 [2023-11-06 22:57:57,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2135 GetRequests, 2125 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:57:57,360 INFO L413 NwaCegarLoop]: 2519 mSDtfsCounter, 2136 mSDsluCounter, 4817 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2136 SdHoareTripleChecker+Valid, 7336 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:57:57,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2136 Valid, 7336 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:57:57,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2978 states. [2023-11-06 22:57:57,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2978 to 1661. [2023-11-06 22:57:57,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1661 states, 1660 states have (on average 1.630722891566265) internal successors, (2707), 1660 states have internal predecessors, (2707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:57,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1661 states to 1661 states and 2707 transitions. [2023-11-06 22:57:57,397 INFO L78 Accepts]: Start accepts. Automaton has 1661 states and 2707 transitions. Word has length 1068 [2023-11-06 22:57:57,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:57:57,398 INFO L495 AbstractCegarLoop]: Abstraction has 1661 states and 2707 transitions. [2023-11-06 22:57:57,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 246.75) internal successors, (987), 4 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:57,398 INFO L276 IsEmpty]: Start isEmpty. Operand 1661 states and 2707 transitions. [2023-11-06 22:57:57,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1070 [2023-11-06 22:57:57,410 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:57:57,411 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:57:57,436 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-06 22:57:57,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-11-06 22:57:57,625 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:57:57,625 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:57,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1489165475, now seen corresponding path program 1 times [2023-11-06 22:57:57,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:57,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357592066] [2023-11-06 22:57:57,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:57,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:57,741 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:57:57,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [296807299] [2023-11-06 22:57:57,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:57,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:57:57,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:57:57,743 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:57:57,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-06 22:57:58,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:59,005 INFO L262 TraceCheckSpWp]: Trace formula consists of 4860 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-06 22:57:59,018 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:57:59,528 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 46 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:57:59,528 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:57:59,571 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-06 22:57:59,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:57:59,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357592066] [2023-11-06 22:57:59,572 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:57:59,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [296807299] [2023-11-06 22:57:59,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [296807299] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 22:57:59,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:57:59,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-11-06 22:57:59,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418221563] [2023-11-06 22:57:59,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:57:59,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:57:59,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:57:59,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:57:59,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:57:59,578 INFO L87 Difference]: Start difference. First operand 1661 states and 2707 transitions. Second operand has 4 states, 4 states have (on average 247.75) internal successors, (991), 4 states have internal predecessors, (991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:59,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:57:59,657 INFO L93 Difference]: Finished difference Result 4443 states and 7256 transitions. [2023-11-06 22:57:59,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:57:59,657 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 247.75) internal successors, (991), 4 states have internal predecessors, (991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1069 [2023-11-06 22:57:59,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:57:59,664 INFO L225 Difference]: With dead ends: 4443 [2023-11-06 22:57:59,664 INFO L226 Difference]: Without dead ends: 2992 [2023-11-06 22:57:59,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2137 GetRequests, 2127 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:57:59,667 INFO L413 NwaCegarLoop]: 2511 mSDtfsCounter, 2133 mSDsluCounter, 4809 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2133 SdHoareTripleChecker+Valid, 7320 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:57:59,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2133 Valid, 7320 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:57:59,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2992 states. [2023-11-06 22:57:59,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2992 to 1671. [2023-11-06 22:57:59,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1671 states, 1670 states have (on average 1.6281437125748504) internal successors, (2719), 1670 states have internal predecessors, (2719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:59,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1671 states to 1671 states and 2719 transitions. [2023-11-06 22:57:59,704 INFO L78 Accepts]: Start accepts. Automaton has 1671 states and 2719 transitions. Word has length 1069 [2023-11-06 22:57:59,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:57:59,706 INFO L495 AbstractCegarLoop]: Abstraction has 1671 states and 2719 transitions. [2023-11-06 22:57:59,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 247.75) internal successors, (991), 4 states have internal predecessors, (991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:59,706 INFO L276 IsEmpty]: Start isEmpty. Operand 1671 states and 2719 transitions. [2023-11-06 22:57:59,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1071 [2023-11-06 22:57:59,723 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:57:59,724 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:57:59,745 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-06 22:57:59,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:57:59,937 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:57:59,937 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:59,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1227027331, now seen corresponding path program 1 times [2023-11-06 22:57:59,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:59,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483181828] [2023-11-06 22:57:59,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:59,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:58:00,046 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:58:00,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2114111386] [2023-11-06 22:58:00,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:00,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:58:00,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:58:00,047 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:58:00,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-06 22:58:01,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:58:01,316 INFO L262 TraceCheckSpWp]: Trace formula consists of 4864 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-06 22:58:01,330 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:58:01,735 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 50 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:58:01,735 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:58:01,773 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2023-11-06 22:58:01,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:58:01,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483181828] [2023-11-06 22:58:01,774 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:58:01,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2114111386] [2023-11-06 22:58:01,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2114111386] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 22:58:01,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:58:01,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-11-06 22:58:01,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920123108] [2023-11-06 22:58:01,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:58:01,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:58:01,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:58:01,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:58:01,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:58:01,780 INFO L87 Difference]: Start difference. First operand 1671 states and 2719 transitions. Second operand has 4 states, 4 states have (on average 248.75) internal successors, (995), 4 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:01,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:58:01,864 INFO L93 Difference]: Finished difference Result 4473 states and 7290 transitions. [2023-11-06 22:58:01,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:58:01,865 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 248.75) internal successors, (995), 4 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1070 [2023-11-06 22:58:01,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:58:01,868 INFO L225 Difference]: With dead ends: 4473 [2023-11-06 22:58:01,868 INFO L226 Difference]: Without dead ends: 3006 [2023-11-06 22:58:01,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2139 GetRequests, 2129 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:58:01,870 INFO L413 NwaCegarLoop]: 2503 mSDtfsCounter, 2130 mSDsluCounter, 4801 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2130 SdHoareTripleChecker+Valid, 7304 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:58:01,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2130 Valid, 7304 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:58:01,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3006 states. [2023-11-06 22:58:01,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3006 to 1681. [2023-11-06 22:58:01,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1681 states, 1680 states have (on average 1.625595238095238) internal successors, (2731), 1680 states have internal predecessors, (2731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:01,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1681 states to 1681 states and 2731 transitions. [2023-11-06 22:58:01,907 INFO L78 Accepts]: Start accepts. Automaton has 1681 states and 2731 transitions. Word has length 1070 [2023-11-06 22:58:01,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:58:01,908 INFO L495 AbstractCegarLoop]: Abstraction has 1681 states and 2731 transitions. [2023-11-06 22:58:01,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 248.75) internal successors, (995), 4 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:01,909 INFO L276 IsEmpty]: Start isEmpty. Operand 1681 states and 2731 transitions. [2023-11-06 22:58:01,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1072 [2023-11-06 22:58:01,921 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:58:01,922 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:58:01,939 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-06 22:58:02,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-11-06 22:58:02,138 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:58:02,138 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:58:02,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1324252437, now seen corresponding path program 1 times [2023-11-06 22:58:02,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:58:02,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352636781] [2023-11-06 22:58:02,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:02,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:58:02,228 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:58:02,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1094832337] [2023-11-06 22:58:02,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:02,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:58:02,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:58:02,230 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:58:02,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-06 22:58:03,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:58:03,499 INFO L262 TraceCheckSpWp]: Trace formula consists of 4867 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-06 22:58:03,513 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:58:03,933 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 54 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:58:03,933 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:58:03,969 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-11-06 22:58:03,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:58:03,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352636781] [2023-11-06 22:58:03,969 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:58:03,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094832337] [2023-11-06 22:58:03,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1094832337] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 22:58:03,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:58:03,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-11-06 22:58:03,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285228676] [2023-11-06 22:58:03,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:58:03,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:58:03,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:58:03,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:58:03,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:58:03,974 INFO L87 Difference]: Start difference. First operand 1681 states and 2731 transitions. Second operand has 4 states, 4 states have (on average 249.5) internal successors, (998), 4 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:04,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:58:04,041 INFO L93 Difference]: Finished difference Result 4500 states and 7321 transitions. [2023-11-06 22:58:04,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:58:04,042 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 249.5) internal successors, (998), 4 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1071 [2023-11-06 22:58:04,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:58:04,046 INFO L225 Difference]: With dead ends: 4500 [2023-11-06 22:58:04,046 INFO L226 Difference]: Without dead ends: 3017 [2023-11-06 22:58:04,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2141 GetRequests, 2131 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:58:04,048 INFO L413 NwaCegarLoop]: 2498 mSDtfsCounter, 2129 mSDsluCounter, 4796 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2129 SdHoareTripleChecker+Valid, 7294 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:58:04,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2129 Valid, 7294 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:58:04,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3017 states. [2023-11-06 22:58:04,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3017 to 1685. [2023-11-06 22:58:04,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1685 states, 1684 states have (on average 1.6241092636579573) internal successors, (2735), 1684 states have internal predecessors, (2735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:04,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1685 states to 1685 states and 2735 transitions. [2023-11-06 22:58:04,081 INFO L78 Accepts]: Start accepts. Automaton has 1685 states and 2735 transitions. Word has length 1071 [2023-11-06 22:58:04,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:58:04,082 INFO L495 AbstractCegarLoop]: Abstraction has 1685 states and 2735 transitions. [2023-11-06 22:58:04,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 249.5) internal successors, (998), 4 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:04,083 INFO L276 IsEmpty]: Start isEmpty. Operand 1685 states and 2735 transitions. [2023-11-06 22:58:04,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1073 [2023-11-06 22:58:04,095 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:58:04,096 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:58:04,119 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-06 22:58:04,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-11-06 22:58:04,311 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:58:04,311 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:58:04,312 INFO L85 PathProgramCache]: Analyzing trace with hash -547763497, now seen corresponding path program 1 times [2023-11-06 22:58:04,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:58:04,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493491572] [2023-11-06 22:58:04,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:04,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:58:04,420 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:58:04,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1094433905] [2023-11-06 22:58:04,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:04,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:58:04,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:58:04,422 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:58:04,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-06 22:58:05,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:58:05,736 INFO L262 TraceCheckSpWp]: Trace formula consists of 4870 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-06 22:58:05,750 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:58:06,198 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 56 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:58:06,198 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:58:06,237 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2023-11-06 22:58:06,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:58:06,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493491572] [2023-11-06 22:58:06,237 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:58:06,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094433905] [2023-11-06 22:58:06,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1094433905] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 22:58:06,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:58:06,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-11-06 22:58:06,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329663139] [2023-11-06 22:58:06,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:58:06,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:58:06,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:58:06,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:58:06,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:58:06,241 INFO L87 Difference]: Start difference. First operand 1685 states and 2735 transitions. Second operand has 4 states, 4 states have (on average 250.5) internal successors, (1002), 4 states have internal predecessors, (1002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:06,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:58:06,308 INFO L93 Difference]: Finished difference Result 4518 states and 7340 transitions. [2023-11-06 22:58:06,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:58:06,313 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 250.5) internal successors, (1002), 4 states have internal predecessors, (1002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1072 [2023-11-06 22:58:06,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:58:06,316 INFO L225 Difference]: With dead ends: 4518 [2023-11-06 22:58:06,316 INFO L226 Difference]: Without dead ends: 3025 [2023-11-06 22:58:06,318 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2143 GetRequests, 2133 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:58:06,318 INFO L413 NwaCegarLoop]: 2489 mSDtfsCounter, 2124 mSDsluCounter, 4787 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2124 SdHoareTripleChecker+Valid, 7276 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:58:06,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2124 Valid, 7276 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:58:06,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3025 states. [2023-11-06 22:58:06,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3025 to 1695. [2023-11-06 22:58:06,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1695 states, 1694 states have (on average 1.6221959858323494) internal successors, (2748), 1694 states have internal predecessors, (2748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:06,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1695 states to 1695 states and 2748 transitions. [2023-11-06 22:58:06,348 INFO L78 Accepts]: Start accepts. Automaton has 1695 states and 2748 transitions. Word has length 1072 [2023-11-06 22:58:06,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:58:06,349 INFO L495 AbstractCegarLoop]: Abstraction has 1695 states and 2748 transitions. [2023-11-06 22:58:06,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 250.5) internal successors, (1002), 4 states have internal predecessors, (1002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:06,350 INFO L276 IsEmpty]: Start isEmpty. Operand 1695 states and 2748 transitions. [2023-11-06 22:58:06,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1074 [2023-11-06 22:58:06,362 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:58:06,363 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:58:06,380 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-11-06 22:58:06,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:58:06,581 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:58:06,581 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:58:06,581 INFO L85 PathProgramCache]: Analyzing trace with hash -25235145, now seen corresponding path program 1 times [2023-11-06 22:58:06,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:58:06,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530205162] [2023-11-06 22:58:06,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:06,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:58:06,669 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:58:06,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1545925927] [2023-11-06 22:58:06,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:06,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:58:06,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:58:06,671 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:58:06,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-06 22:58:07,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:58:07,955 INFO L262 TraceCheckSpWp]: Trace formula consists of 4873 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-06 22:58:07,969 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:58:08,447 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 60 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:58:08,447 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:58:08,484 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-06 22:58:08,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:58:08,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530205162] [2023-11-06 22:58:08,485 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:58:08,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545925927] [2023-11-06 22:58:08,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1545925927] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 22:58:08,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:58:08,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-11-06 22:58:08,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759179602] [2023-11-06 22:58:08,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:58:08,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:58:08,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:58:08,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:58:08,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:58:08,489 INFO L87 Difference]: Start difference. First operand 1695 states and 2748 transitions. Second operand has 4 states, 4 states have (on average 251.5) internal successors, (1006), 4 states have internal predecessors, (1006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:08,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:58:08,554 INFO L93 Difference]: Finished difference Result 4545 states and 7373 transitions. [2023-11-06 22:58:08,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:58:08,554 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 251.5) internal successors, (1006), 4 states have internal predecessors, (1006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1073 [2023-11-06 22:58:08,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:58:08,558 INFO L225 Difference]: With dead ends: 4545 [2023-11-06 22:58:08,558 INFO L226 Difference]: Without dead ends: 3039 [2023-11-06 22:58:08,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2145 GetRequests, 2135 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:58:08,561 INFO L413 NwaCegarLoop]: 2481 mSDtfsCounter, 2121 mSDsluCounter, 4779 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2121 SdHoareTripleChecker+Valid, 7260 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:58:08,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2121 Valid, 7260 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:58:08,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3039 states. [2023-11-06 22:58:08,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3039 to 1705. [2023-11-06 22:58:08,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1705 states, 1704 states have (on average 1.619718309859155) internal successors, (2760), 1704 states have internal predecessors, (2760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:08,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1705 states to 1705 states and 2760 transitions. [2023-11-06 22:58:08,590 INFO L78 Accepts]: Start accepts. Automaton has 1705 states and 2760 transitions. Word has length 1073 [2023-11-06 22:58:08,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:58:08,591 INFO L495 AbstractCegarLoop]: Abstraction has 1705 states and 2760 transitions. [2023-11-06 22:58:08,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 251.5) internal successors, (1006), 4 states have internal predecessors, (1006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:08,592 INFO L276 IsEmpty]: Start isEmpty. Operand 1705 states and 2760 transitions. [2023-11-06 22:58:08,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1075 [2023-11-06 22:58:08,604 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:58:08,605 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:58:08,622 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-11-06 22:58:08,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:58:08,820 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:58:08,820 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:58:08,821 INFO L85 PathProgramCache]: Analyzing trace with hash -654522997, now seen corresponding path program 1 times [2023-11-06 22:58:08,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:58:08,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137352763] [2023-11-06 22:58:08,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:08,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:58:08,924 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:58:08,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [413527443] [2023-11-06 22:58:08,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:08,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:58:08,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:58:08,927 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:58:08,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-06 22:58:10,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:58:10,207 INFO L262 TraceCheckSpWp]: Trace formula consists of 4876 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-06 22:58:10,221 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:58:10,637 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 64 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:58:10,637 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:58:10,679 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-11-06 22:58:10,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:58:10,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137352763] [2023-11-06 22:58:10,679 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:58:10,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [413527443] [2023-11-06 22:58:10,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [413527443] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 22:58:10,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:58:10,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-11-06 22:58:10,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811811341] [2023-11-06 22:58:10,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:58:10,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:58:10,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:58:10,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:58:10,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:58:10,685 INFO L87 Difference]: Start difference. First operand 1705 states and 2760 transitions. Second operand has 4 states, 4 states have (on average 252.5) internal successors, (1010), 4 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:10,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:58:10,752 INFO L93 Difference]: Finished difference Result 4575 states and 7409 transitions. [2023-11-06 22:58:10,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:58:10,752 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 252.5) internal successors, (1010), 4 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1074 [2023-11-06 22:58:10,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:58:10,756 INFO L225 Difference]: With dead ends: 4575 [2023-11-06 22:58:10,756 INFO L226 Difference]: Without dead ends: 3053 [2023-11-06 22:58:10,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2147 GetRequests, 2137 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:58:10,758 INFO L413 NwaCegarLoop]: 2472 mSDtfsCounter, 2118 mSDsluCounter, 4770 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2118 SdHoareTripleChecker+Valid, 7242 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:58:10,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2118 Valid, 7242 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:58:10,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3053 states. [2023-11-06 22:58:10,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3053 to 1715. [2023-11-06 22:58:10,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1715 states, 1714 states have (on average 1.617852975495916) internal successors, (2773), 1714 states have internal predecessors, (2773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:10,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1715 states to 1715 states and 2773 transitions. [2023-11-06 22:58:10,813 INFO L78 Accepts]: Start accepts. Automaton has 1715 states and 2773 transitions. Word has length 1074 [2023-11-06 22:58:10,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:58:10,814 INFO L495 AbstractCegarLoop]: Abstraction has 1715 states and 2773 transitions. [2023-11-06 22:58:10,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 252.5) internal successors, (1010), 4 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:10,815 INFO L276 IsEmpty]: Start isEmpty. Operand 1715 states and 2773 transitions. [2023-11-06 22:58:10,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1076 [2023-11-06 22:58:10,827 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:58:10,827 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:58:10,841 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-11-06 22:58:11,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2023-11-06 22:58:11,028 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:58:11,028 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:58:11,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1511021955, now seen corresponding path program 1 times [2023-11-06 22:58:11,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:58:11,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085637116] [2023-11-06 22:58:11,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:11,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:58:11,122 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:58:11,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [667158030] [2023-11-06 22:58:11,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:11,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:58:11,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:58:11,124 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:58:11,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-06 22:58:12,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:58:12,376 INFO L262 TraceCheckSpWp]: Trace formula consists of 4879 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-06 22:58:12,388 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:58:12,816 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 68 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:58:12,816 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:58:12,869 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-06 22:58:12,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:58:12,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085637116] [2023-11-06 22:58:12,869 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:58:12,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667158030] [2023-11-06 22:58:12,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [667158030] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 22:58:12,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:58:12,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-11-06 22:58:12,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826215675] [2023-11-06 22:58:12,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:58:12,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:58:12,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:58:12,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:58:12,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:58:12,874 INFO L87 Difference]: Start difference. First operand 1715 states and 2773 transitions. Second operand has 5 states, 5 states have (on average 202.4) internal successors, (1012), 5 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:13,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:58:13,019 INFO L93 Difference]: Finished difference Result 5920 states and 9644 transitions. [2023-11-06 22:58:13,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:58:13,019 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 202.4) internal successors, (1012), 5 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1075 [2023-11-06 22:58:13,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:58:13,024 INFO L225 Difference]: With dead ends: 5920 [2023-11-06 22:58:13,024 INFO L226 Difference]: Without dead ends: 4528 [2023-11-06 22:58:13,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2148 GetRequests, 2137 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:58:13,026 INFO L413 NwaCegarLoop]: 6585 mSDtfsCounter, 4291 mSDsluCounter, 15452 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4291 SdHoareTripleChecker+Valid, 22037 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:58:13,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4291 Valid, 22037 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:58:13,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4528 states. [2023-11-06 22:58:13,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4528 to 1717. [2023-11-06 22:58:13,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1717 states, 1716 states have (on average 1.617132867132867) internal successors, (2775), 1716 states have internal predecessors, (2775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:13,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1717 states to 1717 states and 2775 transitions. [2023-11-06 22:58:13,054 INFO L78 Accepts]: Start accepts. Automaton has 1717 states and 2775 transitions. Word has length 1075 [2023-11-06 22:58:13,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:58:13,055 INFO L495 AbstractCegarLoop]: Abstraction has 1717 states and 2775 transitions. [2023-11-06 22:58:13,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 202.4) internal successors, (1012), 5 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:13,055 INFO L276 IsEmpty]: Start isEmpty. Operand 1717 states and 2775 transitions. [2023-11-06 22:58:13,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1077 [2023-11-06 22:58:13,068 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:58:13,069 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:58:13,092 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-11-06 22:58:13,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2023-11-06 22:58:13,286 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:58:13,286 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:58:13,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1874820443, now seen corresponding path program 1 times [2023-11-06 22:58:13,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:58:13,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044321406] [2023-11-06 22:58:13,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:13,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:58:13,397 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:58:13,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [592987155] [2023-11-06 22:58:13,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:13,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:58:13,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:58:13,400 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:58:13,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-06 22:58:14,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:58:14,722 INFO L262 TraceCheckSpWp]: Trace formula consists of 4882 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-06 22:58:14,739 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:58:15,166 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 64 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:58:15,166 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:58:15,229 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2023-11-06 22:58:15,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:58:15,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044321406] [2023-11-06 22:58:15,230 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:58:15,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592987155] [2023-11-06 22:58:15,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [592987155] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 22:58:15,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:58:15,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-11-06 22:58:15,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782326923] [2023-11-06 22:58:15,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:58:15,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:58:15,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:58:15,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:58:15,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:58:15,234 INFO L87 Difference]: Start difference. First operand 1717 states and 2775 transitions. Second operand has 5 states, 5 states have (on average 202.0) internal successors, (1010), 5 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:15,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:58:15,354 INFO L93 Difference]: Finished difference Result 5917 states and 9638 transitions. [2023-11-06 22:58:15,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:58:15,354 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 202.0) internal successors, (1010), 5 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1076 [2023-11-06 22:58:15,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:58:15,359 INFO L225 Difference]: With dead ends: 5917 [2023-11-06 22:58:15,359 INFO L226 Difference]: Without dead ends: 4523 [2023-11-06 22:58:15,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2150 GetRequests, 2139 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:58:15,361 INFO L413 NwaCegarLoop]: 6589 mSDtfsCounter, 4294 mSDsluCounter, 15460 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4294 SdHoareTripleChecker+Valid, 22049 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:58:15,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4294 Valid, 22049 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:58:15,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4523 states. [2023-11-06 22:58:15,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4523 to 1717. [2023-11-06 22:58:15,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1717 states, 1716 states have (on average 1.617132867132867) internal successors, (2775), 1716 states have internal predecessors, (2775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:15,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1717 states to 1717 states and 2775 transitions. [2023-11-06 22:58:15,396 INFO L78 Accepts]: Start accepts. Automaton has 1717 states and 2775 transitions. Word has length 1076 [2023-11-06 22:58:15,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:58:15,397 INFO L495 AbstractCegarLoop]: Abstraction has 1717 states and 2775 transitions. [2023-11-06 22:58:15,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 202.0) internal successors, (1010), 5 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:15,398 INFO L276 IsEmpty]: Start isEmpty. Operand 1717 states and 2775 transitions. [2023-11-06 22:58:15,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1078 [2023-11-06 22:58:15,410 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:58:15,411 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:58:15,430 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-11-06 22:58:15,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2023-11-06 22:58:15,630 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:58:15,630 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:58:15,631 INFO L85 PathProgramCache]: Analyzing trace with hash 586314177, now seen corresponding path program 1 times [2023-11-06 22:58:15,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:58:15,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87297318] [2023-11-06 22:58:15,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:15,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:58:15,719 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:58:15,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [236913953] [2023-11-06 22:58:15,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:15,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:58:15,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:58:15,722 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:58:15,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-06 22:58:17,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:58:17,071 INFO L262 TraceCheckSpWp]: Trace formula consists of 4886 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-06 22:58:17,086 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:58:17,508 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 60 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:58:17,508 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:58:17,565 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2023-11-06 22:58:17,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:58:17,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87297318] [2023-11-06 22:58:17,565 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:58:17,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236913953] [2023-11-06 22:58:17,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [236913953] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 22:58:17,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:58:17,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-11-06 22:58:17,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083040921] [2023-11-06 22:58:17,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:58:17,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:58:17,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:58:17,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:58:17,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:58:17,569 INFO L87 Difference]: Start difference. First operand 1717 states and 2775 transitions. Second operand has 5 states, 5 states have (on average 201.4) internal successors, (1007), 5 states have internal predecessors, (1007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:17,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:58:17,689 INFO L93 Difference]: Finished difference Result 5912 states and 9634 transitions. [2023-11-06 22:58:17,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:58:17,690 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 201.4) internal successors, (1007), 5 states have internal predecessors, (1007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1077 [2023-11-06 22:58:17,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:58:17,694 INFO L225 Difference]: With dead ends: 5912 [2023-11-06 22:58:17,694 INFO L226 Difference]: Without dead ends: 4518 [2023-11-06 22:58:17,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2152 GetRequests, 2141 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:58:17,697 INFO L413 NwaCegarLoop]: 6594 mSDtfsCounter, 4297 mSDsluCounter, 15470 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4297 SdHoareTripleChecker+Valid, 22064 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:58:17,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4297 Valid, 22064 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:58:17,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4518 states. [2023-11-06 22:58:17,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4518 to 1717. [2023-11-06 22:58:17,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1717 states, 1716 states have (on average 1.617132867132867) internal successors, (2775), 1716 states have internal predecessors, (2775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:17,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1717 states to 1717 states and 2775 transitions. [2023-11-06 22:58:17,724 INFO L78 Accepts]: Start accepts. Automaton has 1717 states and 2775 transitions. Word has length 1077 [2023-11-06 22:58:17,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:58:17,725 INFO L495 AbstractCegarLoop]: Abstraction has 1717 states and 2775 transitions. [2023-11-06 22:58:17,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 201.4) internal successors, (1007), 5 states have internal predecessors, (1007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:17,725 INFO L276 IsEmpty]: Start isEmpty. Operand 1717 states and 2775 transitions. [2023-11-06 22:58:17,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1079 [2023-11-06 22:58:17,732 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:58:17,733 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:58:17,747 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-11-06 22:58:17,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2023-11-06 22:58:17,936 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:58:17,936 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:58:17,936 INFO L85 PathProgramCache]: Analyzing trace with hash 740548135, now seen corresponding path program 1 times [2023-11-06 22:58:17,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:58:17,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210033593] [2023-11-06 22:58:17,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:17,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:58:18,023 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:58:18,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [111259477] [2023-11-06 22:58:18,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:18,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:58:18,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:58:18,025 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:58:18,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-06 22:58:19,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:58:19,290 INFO L262 TraceCheckSpWp]: Trace formula consists of 4889 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-06 22:58:19,302 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:58:19,714 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 56 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:58:19,714 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:58:19,767 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2023-11-06 22:58:19,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:58:19,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210033593] [2023-11-06 22:58:19,768 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:58:19,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111259477] [2023-11-06 22:58:19,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [111259477] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 22:58:19,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:58:19,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-11-06 22:58:19,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444997363] [2023-11-06 22:58:19,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:58:19,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:58:19,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:58:19,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:58:19,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:58:19,773 INFO L87 Difference]: Start difference. First operand 1717 states and 2775 transitions. Second operand has 5 states, 5 states have (on average 201.0) internal successors, (1005), 5 states have internal predecessors, (1005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:19,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:58:19,901 INFO L93 Difference]: Finished difference Result 5913 states and 9638 transitions. [2023-11-06 22:58:19,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:58:19,902 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 201.0) internal successors, (1005), 5 states have internal predecessors, (1005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1078 [2023-11-06 22:58:19,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:58:19,907 INFO L225 Difference]: With dead ends: 5913 [2023-11-06 22:58:19,907 INFO L226 Difference]: Without dead ends: 4519 [2023-11-06 22:58:19,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2154 GetRequests, 2143 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:58:19,909 INFO L413 NwaCegarLoop]: 6598 mSDtfsCounter, 4300 mSDsluCounter, 15478 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4300 SdHoareTripleChecker+Valid, 22076 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:58:19,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4300 Valid, 22076 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:58:19,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4519 states. [2023-11-06 22:58:19,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4519 to 1717. [2023-11-06 22:58:19,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1717 states, 1716 states have (on average 1.617132867132867) internal successors, (2775), 1716 states have internal predecessors, (2775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:19,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1717 states to 1717 states and 2775 transitions. [2023-11-06 22:58:19,939 INFO L78 Accepts]: Start accepts. Automaton has 1717 states and 2775 transitions. Word has length 1078 [2023-11-06 22:58:19,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:58:19,940 INFO L495 AbstractCegarLoop]: Abstraction has 1717 states and 2775 transitions. [2023-11-06 22:58:19,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 201.0) internal successors, (1005), 5 states have internal predecessors, (1005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:19,940 INFO L276 IsEmpty]: Start isEmpty. Operand 1717 states and 2775 transitions. [2023-11-06 22:58:19,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1080 [2023-11-06 22:58:19,948 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:58:19,948 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:58:19,963 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-11-06 22:58:20,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2023-11-06 22:58:20,149 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:58:20,149 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:58:20,150 INFO L85 PathProgramCache]: Analyzing trace with hash 717992959, now seen corresponding path program 1 times [2023-11-06 22:58:20,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:58:20,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195963653] [2023-11-06 22:58:20,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:20,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:58:20,245 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:58:20,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [668680822] [2023-11-06 22:58:20,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:20,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:58:20,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:58:20,249 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:58:20,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-06 22:58:21,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:58:21,528 INFO L262 TraceCheckSpWp]: Trace formula consists of 4893 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-06 22:58:21,541 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:58:22,017 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 50 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:58:22,018 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:58:22,058 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2023-11-06 22:58:22,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:58:22,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195963653] [2023-11-06 22:58:22,058 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:58:22,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [668680822] [2023-11-06 22:58:22,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [668680822] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 22:58:22,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:58:22,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-11-06 22:58:22,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254844541] [2023-11-06 22:58:22,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:58:22,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:58:22,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:58:22,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:58:22,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:58:22,063 INFO L87 Difference]: Start difference. First operand 1717 states and 2775 transitions. Second operand has 4 states, 4 states have (on average 250.25) internal successors, (1001), 4 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:22,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:58:22,133 INFO L93 Difference]: Finished difference Result 4424 states and 7225 transitions. [2023-11-06 22:58:22,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:58:22,133 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 250.25) internal successors, (1001), 4 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1079 [2023-11-06 22:58:22,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:58:22,137 INFO L225 Difference]: With dead ends: 4424 [2023-11-06 22:58:22,137 INFO L226 Difference]: Without dead ends: 3030 [2023-11-06 22:58:22,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2156 GetRequests, 2147 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:58:22,139 INFO L413 NwaCegarLoop]: 4426 mSDtfsCounter, 2127 mSDsluCounter, 6721 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2127 SdHoareTripleChecker+Valid, 11147 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:58:22,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2127 Valid, 11147 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:58:22,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3030 states. [2023-11-06 22:58:22,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3030 to 1717. [2023-11-06 22:58:22,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1717 states, 1716 states have (on average 1.617132867132867) internal successors, (2775), 1716 states have internal predecessors, (2775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:22,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1717 states to 1717 states and 2775 transitions. [2023-11-06 22:58:22,161 INFO L78 Accepts]: Start accepts. Automaton has 1717 states and 2775 transitions. Word has length 1079 [2023-11-06 22:58:22,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:58:22,162 INFO L495 AbstractCegarLoop]: Abstraction has 1717 states and 2775 transitions. [2023-11-06 22:58:22,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 250.25) internal successors, (1001), 4 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:22,163 INFO L276 IsEmpty]: Start isEmpty. Operand 1717 states and 2775 transitions. [2023-11-06 22:58:22,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1081 [2023-11-06 22:58:22,170 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:58:22,171 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:58:22,185 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-11-06 22:58:22,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2023-11-06 22:58:22,372 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:58:22,372 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:58:22,373 INFO L85 PathProgramCache]: Analyzing trace with hash 739272195, now seen corresponding path program 1 times [2023-11-06 22:58:22,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:58:22,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218772065] [2023-11-06 22:58:22,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:22,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:58:22,474 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:58:22,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1041151600] [2023-11-06 22:58:22,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:22,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:58:22,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:58:22,475 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:58:22,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-11-06 22:58:23,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:58:23,740 INFO L262 TraceCheckSpWp]: Trace formula consists of 4896 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-06 22:58:23,753 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:58:24,163 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 46 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:58:24,163 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:58:24,232 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-11-06 22:58:24,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:58:24,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218772065] [2023-11-06 22:58:24,233 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:58:24,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041151600] [2023-11-06 22:58:24,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1041151600] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 22:58:24,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:58:24,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-11-06 22:58:24,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978100904] [2023-11-06 22:58:24,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:58:24,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:58:24,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:58:24,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:58:24,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:58:24,238 INFO L87 Difference]: Start difference. First operand 1717 states and 2775 transitions. Second operand has 5 states, 5 states have (on average 199.8) internal successors, (999), 5 states have internal predecessors, (999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:24,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:58:24,363 INFO L93 Difference]: Finished difference Result 5895 states and 9622 transitions. [2023-11-06 22:58:24,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:58:24,363 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 199.8) internal successors, (999), 5 states have internal predecessors, (999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1080 [2023-11-06 22:58:24,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:58:24,367 INFO L225 Difference]: With dead ends: 5895 [2023-11-06 22:58:24,367 INFO L226 Difference]: Without dead ends: 4501 [2023-11-06 22:58:24,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2158 GetRequests, 2147 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:58:24,370 INFO L413 NwaCegarLoop]: 6611 mSDtfsCounter, 4309 mSDsluCounter, 15504 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4309 SdHoareTripleChecker+Valid, 22115 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:58:24,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4309 Valid, 22115 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:58:24,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4501 states. [2023-11-06 22:58:24,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4501 to 1717. [2023-11-06 22:58:24,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1717 states, 1716 states have (on average 1.617132867132867) internal successors, (2775), 1716 states have internal predecessors, (2775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:24,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1717 states to 1717 states and 2775 transitions. [2023-11-06 22:58:24,407 INFO L78 Accepts]: Start accepts. Automaton has 1717 states and 2775 transitions. Word has length 1080 [2023-11-06 22:58:24,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:58:24,408 INFO L495 AbstractCegarLoop]: Abstraction has 1717 states and 2775 transitions. [2023-11-06 22:58:24,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 199.8) internal successors, (999), 5 states have internal predecessors, (999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:24,409 INFO L276 IsEmpty]: Start isEmpty. Operand 1717 states and 2775 transitions. [2023-11-06 22:58:24,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1082 [2023-11-06 22:58:24,417 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:58:24,417 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:58:24,432 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2023-11-06 22:58:24,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2023-11-06 22:58:24,618 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:58:24,618 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:58:24,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1774070533, now seen corresponding path program 1 times [2023-11-06 22:58:24,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:58:24,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25108261] [2023-11-06 22:58:24,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:24,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:58:24,703 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:58:24,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [981324169] [2023-11-06 22:58:24,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:24,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:58:24,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:58:24,708 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:58:24,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-11-06 22:58:25,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:58:25,990 INFO L262 TraceCheckSpWp]: Trace formula consists of 4899 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-06 22:58:26,004 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:58:26,411 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 42 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:58:26,411 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:58:26,444 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2023-11-06 22:58:26,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:58:26,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25108261] [2023-11-06 22:58:26,445 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:58:26,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981324169] [2023-11-06 22:58:26,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [981324169] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 22:58:26,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:58:26,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-11-06 22:58:26,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754069275] [2023-11-06 22:58:26,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:58:26,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:58:26,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:58:26,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:58:26,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:58:26,449 INFO L87 Difference]: Start difference. First operand 1717 states and 2775 transitions. Second operand has 4 states, 4 states have (on average 249.25) internal successors, (997), 4 states have internal predecessors, (997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:26,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:58:26,519 INFO L93 Difference]: Finished difference Result 4436 states and 7245 transitions. [2023-11-06 22:58:26,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:58:26,520 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 249.25) internal successors, (997), 4 states have internal predecessors, (997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1081 [2023-11-06 22:58:26,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:58:26,523 INFO L225 Difference]: With dead ends: 4436 [2023-11-06 22:58:26,523 INFO L226 Difference]: Without dead ends: 3042 [2023-11-06 22:58:26,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2160 GetRequests, 2151 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:58:26,525 INFO L413 NwaCegarLoop]: 4436 mSDtfsCounter, 2133 mSDsluCounter, 6731 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2133 SdHoareTripleChecker+Valid, 11167 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:58:26,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2133 Valid, 11167 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:58:26,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3042 states. [2023-11-06 22:58:26,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3042 to 1717. [2023-11-06 22:58:26,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1717 states, 1716 states have (on average 1.617132867132867) internal successors, (2775), 1716 states have internal predecessors, (2775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:26,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1717 states to 1717 states and 2775 transitions. [2023-11-06 22:58:26,554 INFO L78 Accepts]: Start accepts. Automaton has 1717 states and 2775 transitions. Word has length 1081 [2023-11-06 22:58:26,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:58:26,555 INFO L495 AbstractCegarLoop]: Abstraction has 1717 states and 2775 transitions. [2023-11-06 22:58:26,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 249.25) internal successors, (997), 4 states have internal predecessors, (997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:26,555 INFO L276 IsEmpty]: Start isEmpty. Operand 1717 states and 2775 transitions. [2023-11-06 22:58:26,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1083 [2023-11-06 22:58:26,567 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:58:26,568 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:58:26,593 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-11-06 22:58:26,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2023-11-06 22:58:26,787 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:58:26,787 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:58:26,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1159601859, now seen corresponding path program 1 times [2023-11-06 22:58:26,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:58:26,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110585264] [2023-11-06 22:58:26,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:26,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:58:26,910 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:58:26,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1874099051] [2023-11-06 22:58:26,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:26,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:58:26,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:58:26,911 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:58:26,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-11-06 22:58:28,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:58:28,191 INFO L262 TraceCheckSpWp]: Trace formula consists of 4902 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-06 22:58:28,204 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:58:28,615 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 38 proven. 103 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:58:28,615 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:58:28,667 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2023-11-06 22:58:28,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:58:28,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110585264] [2023-11-06 22:58:28,667 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:58:28,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874099051] [2023-11-06 22:58:28,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1874099051] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 22:58:28,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:58:28,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-11-06 22:58:28,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021334938] [2023-11-06 22:58:28,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:58:28,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:58:28,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:58:28,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:58:28,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:58:28,671 INFO L87 Difference]: Start difference. First operand 1717 states and 2775 transitions. Second operand has 5 states, 5 states have (on average 199.0) internal successors, (995), 5 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:28,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:58:28,801 INFO L93 Difference]: Finished difference Result 5891 states and 9624 transitions. [2023-11-06 22:58:28,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:58:28,802 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 199.0) internal successors, (995), 5 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1082 [2023-11-06 22:58:28,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:58:28,806 INFO L225 Difference]: With dead ends: 5891 [2023-11-06 22:58:28,806 INFO L226 Difference]: Without dead ends: 4497 [2023-11-06 22:58:28,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2162 GetRequests, 2151 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:58:28,809 INFO L413 NwaCegarLoop]: 6621 mSDtfsCounter, 4315 mSDsluCounter, 15524 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4315 SdHoareTripleChecker+Valid, 22145 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:58:28,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4315 Valid, 22145 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:58:28,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4497 states. [2023-11-06 22:58:28,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4497 to 1717. [2023-11-06 22:58:28,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1717 states, 1716 states have (on average 1.617132867132867) internal successors, (2775), 1716 states have internal predecessors, (2775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:28,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1717 states to 1717 states and 2775 transitions. [2023-11-06 22:58:28,840 INFO L78 Accepts]: Start accepts. Automaton has 1717 states and 2775 transitions. Word has length 1082 [2023-11-06 22:58:28,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:58:28,841 INFO L495 AbstractCegarLoop]: Abstraction has 1717 states and 2775 transitions. [2023-11-06 22:58:28,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 199.0) internal successors, (995), 5 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:28,841 INFO L276 IsEmpty]: Start isEmpty. Operand 1717 states and 2775 transitions. [2023-11-06 22:58:28,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1084 [2023-11-06 22:58:28,848 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:58:28,849 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:58:28,864 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2023-11-06 22:58:29,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:58:29,050 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:58:29,050 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:58:29,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1005984119, now seen corresponding path program 1 times [2023-11-06 22:58:29,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:58:29,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256559806] [2023-11-06 22:58:29,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:29,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:58:29,158 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:58:29,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1185022564] [2023-11-06 22:58:29,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:29,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:58:29,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:58:29,161 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:58:29,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-11-06 22:58:30,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:58:30,476 INFO L262 TraceCheckSpWp]: Trace formula consists of 4905 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-06 22:58:30,488 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:58:30,888 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 32 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:58:30,889 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:58:30,938 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2023-11-06 22:58:30,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:58:30,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256559806] [2023-11-06 22:58:30,938 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:58:30,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1185022564] [2023-11-06 22:58:30,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1185022564] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 22:58:30,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:58:30,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-11-06 22:58:30,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622449173] [2023-11-06 22:58:30,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:58:30,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:58:30,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:58:30,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:58:30,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:58:30,942 INFO L87 Difference]: Start difference. First operand 1717 states and 2775 transitions. Second operand has 5 states, 5 states have (on average 198.4) internal successors, (992), 5 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:31,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:58:31,068 INFO L93 Difference]: Finished difference Result 5878 states and 9609 transitions. [2023-11-06 22:58:31,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:58:31,069 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 198.4) internal successors, (992), 5 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1083 [2023-11-06 22:58:31,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:58:31,072 INFO L225 Difference]: With dead ends: 5878 [2023-11-06 22:58:31,073 INFO L226 Difference]: Without dead ends: 4484 [2023-11-06 22:58:31,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2164 GetRequests, 2153 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:58:31,075 INFO L413 NwaCegarLoop]: 6628 mSDtfsCounter, 4321 mSDsluCounter, 15538 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4321 SdHoareTripleChecker+Valid, 22166 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:58:31,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4321 Valid, 22166 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:58:31,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4484 states. [2023-11-06 22:58:31,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4484 to 1717. [2023-11-06 22:58:31,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1717 states, 1716 states have (on average 1.617132867132867) internal successors, (2775), 1716 states have internal predecessors, (2775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:31,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1717 states to 1717 states and 2775 transitions. [2023-11-06 22:58:31,109 INFO L78 Accepts]: Start accepts. Automaton has 1717 states and 2775 transitions. Word has length 1083 [2023-11-06 22:58:31,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:58:31,110 INFO L495 AbstractCegarLoop]: Abstraction has 1717 states and 2775 transitions. [2023-11-06 22:58:31,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 198.4) internal successors, (992), 5 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:31,110 INFO L276 IsEmpty]: Start isEmpty. Operand 1717 states and 2775 transitions. [2023-11-06 22:58:31,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1085 [2023-11-06 22:58:31,117 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:58:31,118 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:58:31,132 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2023-11-06 22:58:31,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2023-11-06 22:58:31,318 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:58:31,318 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:58:31,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1778567701, now seen corresponding path program 1 times [2023-11-06 22:58:31,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:58:31,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83361326] [2023-11-06 22:58:31,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:31,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:58:31,405 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:58:31,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1958274900] [2023-11-06 22:58:31,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:31,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:58:31,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:58:31,407 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:58:31,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-11-06 22:58:32,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:58:32,672 INFO L262 TraceCheckSpWp]: Trace formula consists of 4909 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-06 22:58:32,736 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:58:33,163 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 28 proven. 115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:58:33,163 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:58:33,214 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2023-11-06 22:58:33,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:58:33,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83361326] [2023-11-06 22:58:33,214 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:58:33,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1958274900] [2023-11-06 22:58:33,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1958274900] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 22:58:33,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:58:33,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-11-06 22:58:33,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50877267] [2023-11-06 22:58:33,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:58:33,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:58:33,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:58:33,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:58:33,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:58:33,218 INFO L87 Difference]: Start difference. First operand 1717 states and 2775 transitions. Second operand has 5 states, 5 states have (on average 197.8) internal successors, (989), 5 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:33,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:58:33,344 INFO L93 Difference]: Finished difference Result 5873 states and 9605 transitions. [2023-11-06 22:58:33,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:58:33,345 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 197.8) internal successors, (989), 5 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1084 [2023-11-06 22:58:33,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:58:33,349 INFO L225 Difference]: With dead ends: 5873 [2023-11-06 22:58:33,349 INFO L226 Difference]: Without dead ends: 4479 [2023-11-06 22:58:33,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2166 GetRequests, 2155 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:58:33,351 INFO L413 NwaCegarLoop]: 6633 mSDtfsCounter, 4324 mSDsluCounter, 15548 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4324 SdHoareTripleChecker+Valid, 22181 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:58:33,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4324 Valid, 22181 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:58:33,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4479 states. [2023-11-06 22:58:33,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4479 to 1717. [2023-11-06 22:58:33,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1717 states, 1716 states have (on average 1.617132867132867) internal successors, (2775), 1716 states have internal predecessors, (2775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:33,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1717 states to 1717 states and 2775 transitions. [2023-11-06 22:58:33,380 INFO L78 Accepts]: Start accepts. Automaton has 1717 states and 2775 transitions. Word has length 1084 [2023-11-06 22:58:33,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:58:33,380 INFO L495 AbstractCegarLoop]: Abstraction has 1717 states and 2775 transitions. [2023-11-06 22:58:33,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 197.8) internal successors, (989), 5 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:33,381 INFO L276 IsEmpty]: Start isEmpty. Operand 1717 states and 2775 transitions. [2023-11-06 22:58:33,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1086 [2023-11-06 22:58:33,388 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:58:33,389 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:58:33,404 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-11-06 22:58:33,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:58:33,589 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:58:33,590 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:58:33,590 INFO L85 PathProgramCache]: Analyzing trace with hash -744669771, now seen corresponding path program 1 times [2023-11-06 22:58:33,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:58:33,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691067980] [2023-11-06 22:58:33,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:33,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:58:33,674 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:58:33,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1960160160] [2023-11-06 22:58:33,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:33,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:58:33,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:58:33,676 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:58:33,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-11-06 22:58:34,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:58:34,943 INFO L262 TraceCheckSpWp]: Trace formula consists of 4912 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-06 22:58:34,956 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:58:35,368 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 24 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:58:35,368 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:58:35,419 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2023-11-06 22:58:35,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:58:35,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691067980] [2023-11-06 22:58:35,419 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:58:35,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960160160] [2023-11-06 22:58:35,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1960160160] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 22:58:35,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:58:35,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-11-06 22:58:35,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579363684] [2023-11-06 22:58:35,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:58:35,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:58:35,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:58:35,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:58:35,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:58:35,424 INFO L87 Difference]: Start difference. First operand 1717 states and 2775 transitions. Second operand has 5 states, 5 states have (on average 197.4) internal successors, (987), 5 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:35,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:58:35,552 INFO L93 Difference]: Finished difference Result 5870 states and 9603 transitions. [2023-11-06 22:58:35,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:58:35,552 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 197.4) internal successors, (987), 5 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1085 [2023-11-06 22:58:35,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:58:35,556 INFO L225 Difference]: With dead ends: 5870 [2023-11-06 22:58:35,556 INFO L226 Difference]: Without dead ends: 4476 [2023-11-06 22:58:35,558 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2168 GetRequests, 2157 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:58:35,558 INFO L413 NwaCegarLoop]: 6637 mSDtfsCounter, 4327 mSDsluCounter, 15556 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4327 SdHoareTripleChecker+Valid, 22193 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:58:35,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4327 Valid, 22193 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:58:35,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4476 states. [2023-11-06 22:58:35,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4476 to 1717. [2023-11-06 22:58:35,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1717 states, 1716 states have (on average 1.617132867132867) internal successors, (2775), 1716 states have internal predecessors, (2775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:35,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1717 states to 1717 states and 2775 transitions. [2023-11-06 22:58:35,585 INFO L78 Accepts]: Start accepts. Automaton has 1717 states and 2775 transitions. Word has length 1085 [2023-11-06 22:58:35,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:58:35,585 INFO L495 AbstractCegarLoop]: Abstraction has 1717 states and 2775 transitions. [2023-11-06 22:58:35,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 197.4) internal successors, (987), 5 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:35,586 INFO L276 IsEmpty]: Start isEmpty. Operand 1717 states and 2775 transitions. [2023-11-06 22:58:35,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1087 [2023-11-06 22:58:35,594 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:58:35,594 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:58:35,609 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2023-11-06 22:58:35,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:58:35,795 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:58:35,795 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:58:35,796 INFO L85 PathProgramCache]: Analyzing trace with hash 369245165, now seen corresponding path program 1 times [2023-11-06 22:58:35,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:58:35,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304451924] [2023-11-06 22:58:35,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:35,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:58:35,880 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:58:35,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [239644656] [2023-11-06 22:58:35,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:35,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:58:35,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:58:35,882 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:58:35,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-11-06 22:58:37,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:58:37,158 INFO L262 TraceCheckSpWp]: Trace formula consists of 4916 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-06 22:58:37,171 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:58:37,666 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 20 proven. 125 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:58:37,667 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:58:37,730 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2023-11-06 22:58:37,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:58:37,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304451924] [2023-11-06 22:58:37,731 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:58:37,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239644656] [2023-11-06 22:58:37,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [239644656] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 22:58:37,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:58:37,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-11-06 22:58:37,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597440648] [2023-11-06 22:58:37,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:58:37,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:58:37,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:58:37,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:58:37,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:58:37,736 INFO L87 Difference]: Start difference. First operand 1717 states and 2775 transitions. Second operand has 5 states, 5 states have (on average 196.8) internal successors, (984), 5 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:37,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:58:37,890 INFO L93 Difference]: Finished difference Result 5873 states and 9610 transitions. [2023-11-06 22:58:37,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:58:37,890 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 196.8) internal successors, (984), 5 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1086 [2023-11-06 22:58:37,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:58:37,894 INFO L225 Difference]: With dead ends: 5873 [2023-11-06 22:58:37,894 INFO L226 Difference]: Without dead ends: 4479 [2023-11-06 22:58:37,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2170 GetRequests, 2159 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:58:37,896 INFO L413 NwaCegarLoop]: 6642 mSDtfsCounter, 4330 mSDsluCounter, 15566 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4330 SdHoareTripleChecker+Valid, 22208 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:58:37,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4330 Valid, 22208 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:58:37,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4479 states. [2023-11-06 22:58:37,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4479 to 1717. [2023-11-06 22:58:37,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1717 states, 1716 states have (on average 1.617132867132867) internal successors, (2775), 1716 states have internal predecessors, (2775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:37,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1717 states to 1717 states and 2775 transitions. [2023-11-06 22:58:37,922 INFO L78 Accepts]: Start accepts. Automaton has 1717 states and 2775 transitions. Word has length 1086 [2023-11-06 22:58:37,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:58:37,923 INFO L495 AbstractCegarLoop]: Abstraction has 1717 states and 2775 transitions. [2023-11-06 22:58:37,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 196.8) internal successors, (984), 5 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:37,923 INFO L276 IsEmpty]: Start isEmpty. Operand 1717 states and 2775 transitions. [2023-11-06 22:58:37,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1088 [2023-11-06 22:58:37,931 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:58:37,931 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:58:37,946 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2023-11-06 22:58:38,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:58:38,133 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:58:38,133 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:58:38,133 INFO L85 PathProgramCache]: Analyzing trace with hash 711921651, now seen corresponding path program 1 times [2023-11-06 22:58:38,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:58:38,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864471120] [2023-11-06 22:58:38,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:38,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:58:38,217 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:58:38,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [729997414] [2023-11-06 22:58:38,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:38,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:58:38,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:58:38,219 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:58:38,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd493b69-cd96-4bbc-b651-6c8e109367fe/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-11-06 22:58:39,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:58:39,517 INFO L262 TraceCheckSpWp]: Trace formula consists of 4919 conjuncts, 39 conjunts are in the unsatisfiable core [2023-11-06 22:58:39,531 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:58:43,018 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 79 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:58:43,018 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:58:47,524 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 93 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:58:47,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:58:47,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864471120] [2023-11-06 22:58:47,524 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:58:47,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [729997414] [2023-11-06 22:58:47,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [729997414] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:58:47,524 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:58:47,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16] total 28 [2023-11-06 22:58:47,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799270091] [2023-11-06 22:58:47,525 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:58:47,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-06 22:58:47,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:58:47,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-06 22:58:47,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=653, Unknown=0, NotChecked=0, Total=756 [2023-11-06 22:58:47,531 INFO L87 Difference]: Start difference. First operand 1717 states and 2775 transitions. Second operand has 28 states, 28 states have (on average 74.39285714285714) internal successors, (2083), 28 states have internal predecessors, (2083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)